diff options
Diffstat (limited to 'drivers/net/ixgbevf')
| -rw-r--r-- | drivers/net/ixgbevf/vf.c | 387 | ||||
| -rw-r--r-- | drivers/net/ixgbevf/vf.h | 168 |
2 files changed, 555 insertions, 0 deletions
diff --git a/drivers/net/ixgbevf/vf.c b/drivers/net/ixgbevf/vf.c new file mode 100644 index 000000000000..4b5dec0ec140 --- /dev/null +++ b/drivers/net/ixgbevf/vf.c @@ -0,0 +1,387 @@ +/******************************************************************************* + + Intel 82599 Virtual Function driver + Copyright(c) 1999 - 2009 Intel Corporation. + + This program is free software; you can redistribute it and/or modify it + under the terms and conditions of the GNU General Public License, + version 2, as published by the Free Software Foundation. + + This program is distributed in the hope it will be useful, but WITHOUT + ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + more details. + + You should have received a copy of the GNU General Public License along with + this program; if not, write to the Free Software Foundation, Inc., + 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. + + The full GNU General Public License is included in this distribution in + the file called "COPYING". + + Contact Information: + e1000-devel Mailing List <e1000-devel@lists.sourceforge.net> + Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 + +*******************************************************************************/ + +#include "vf.h" + +/** + * ixgbevf_start_hw_vf - Prepare hardware for Tx/Rx + * @hw: pointer to hardware structure + * + * Starts the hardware by filling the bus info structure and media type, clears + * all on chip counters, initializes receive address registers, multicast + * table, VLAN filter table, calls routine to set up link and flow control + * settings, and leaves transmit and receive units disabled and uninitialized + **/ +static s32 ixgbevf_start_hw_vf(struct ixgbe_hw *hw) +{ + /* Clear adapter stopped flag */ + hw->adapter_stopped = false; + + return 0; +} + +/** + * ixgbevf_init_hw_vf - virtual function hardware initialization + * @hw: pointer to hardware structure + * + * Initialize the hardware by resetting the hardware and then starting + * the hardware + **/ +static s32 ixgbevf_init_hw_vf(struct ixgbe_hw *hw) +{ + s32 status = hw->mac.ops.start_hw(hw); + + hw->mac.ops.get_mac_addr(hw, hw->mac.addr); + + return status; +} + +/** + * ixgbevf_reset_hw_vf - Performs hardware reset + * @hw: pointer to hardware structure + * + * Resets the hardware by reseting the transmit and receive units, masks and + * clears all interrupts. + **/ +static s32 ixgbevf_reset_hw_vf(struct ixgbe_hw *hw) +{ + struct ixgbe_mbx_info *mbx = &hw->mbx; + u32 timeout = IXGBE_VF_INIT_TIMEOUT; + s32 ret_val = IXGBE_ERR_INVALID_MAC_ADDR; + u32 msgbuf[IXGBE_VF_PERMADDR_MSG_LEN]; + u8 *addr = (u8 *)(&msgbuf[1]); + + /* Call adapter stop to disable tx/rx and clear interrupts */ + hw->mac.ops.stop_adapter(hw); + + IXGBE_WRITE_REG(hw, IXGBE_VFCTRL, IXGBE_CTRL_RST); + IXGBE_WRITE_FLUSH(hw); + + /* we cannot reset while the RSTI / RSTD bits are asserted */ + while (!mbx->ops.check_for_rst(hw) && timeout) { + timeout--; + udelay(5); + } + + if (!timeout) + return IXGBE_ERR_RESET_FAILED; + + /* mailbox timeout can now become active */ + mbx->timeout = IXGBE_VF_MBX_INIT_TIMEOUT; + + msgbuf[0] = IXGBE_VF_RESET; + mbx->ops.write_posted(hw, msgbuf, 1); + + msleep(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->ops.read_posted(hw, msgbuf, IXGBE_VF_PERMADDR_MSG_LEN); + if (ret_val) + return ret_val; + + if (msgbuf[0] != (IXGBE_VF_RESET | IXGBE_VT_MSGTYPE_ACK)) + return IXGBE_ERR_INVALID_MAC_ADDR; + + memcpy(hw->mac.perm_addr, addr, IXGBE_ETH_LENGTH_OF_ADDRESS); + hw->mac.mc_filter_type = msgbuf[IXGBE_VF_MC_TYPE_WORD]; + + return 0; +} + +/** + * ixgbevf_stop_hw_vf - Generic stop Tx/Rx units + * @hw: pointer to hardware structure + * + * Sets the adapter_stopped flag within ixgbe_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. + **/ +static s32 ixgbevf_stop_hw_vf(struct ixgbe_hw *hw) +{ + u32 number_of_queues; + u32 reg_val; + u16 i; + + /* + * Set the adapter_stopped flag so other driver functions stop touching + * the hardware + */ + hw->adapter_stopped = true; + + /* Disable the receive unit by stopped each queue */ + number_of_queues = hw->mac.max_rx_queues; + for (i = 0; i < number_of_queues; i++) { + reg_val = IXGBE_READ_REG(hw, IXGBE_VFRXDCTL(i)); + if (reg_val & IXGBE_RXDCTL_ENABLE) { + reg_val &= ~IXGBE_RXDCTL_ENABLE; + IXGBE_WRITE_REG(hw, IXGBE_VFRXDCTL(i), reg_val); + } + } + + IXGBE_WRITE_FLUSH(hw); + + /* Clear interrupt mask to stop from interrupts being generated */ + IXGBE_WRITE_REG(hw, IXGBE_VTEIMC, IXGBE_VF_IRQ_CLEAR_MASK); + + /* Clear any pending interrupts */ + IXGBE_READ_REG(hw, IXGBE_VTEICR); + + /* Disable the transmit unit. Each queue must be disabled. */ + number_of_queues = hw->mac.max_tx_queues; + for (i = 0; i < number_of_queues; i++) { + reg_val = IXGBE_READ_REG(hw, IXGBE_VFTXDCTL(i)); + if (reg_val & IXGBE_TXDCTL_ENABLE) { + reg_val &= ~IXGBE_TXDCTL_ENABLE; + IXGBE_WRITE_REG(hw, IXGBE_VFTXDCTL(i), reg_val); + } + } + + return 0; +} + +/** + * ixgbevf_mta_vector - Determines bit-vector in multicast table to set + * @hw: pointer to hardware structure + * @mc_addr: the multicast address + * + * Extracts the 12 bits, from a multicast address, to determine which + * bit-vector to set in the multicast table. The hardware uses 12 bits, from + * incoming rx multicast addresses, to determine the bit-vector to check in + * the MTA. Which of the 4 combination, of 12-bits, the hardware uses is set + * by the MO field of the MCSTCTRL. The MO field is set during initialization + * to mc_filter_type. + **/ +static s32 ixgbevf_mta_vector(struct ixgbe_hw *hw, u8 *mc_addr) +{ + u32 vector = 0; + + switch (hw->mac.mc_filter_type) { + case 0: /* use bits [47:36] of the address */ + vector = ((mc_addr[4] >> 4) | (((u16)mc_addr[5]) << 4)); + break; + case 1: /* use bits [46:35] of the address */ + vector = ((mc_addr[4] >> 3) | (((u16)mc_addr[5]) << 5)); + break; + case 2: /* use bits [45:34] of the address */ + vector = ((mc_addr[4] >> 2) | (((u16)mc_addr[5]) << 6)); + break; + case 3: /* use bits [43:32] of the address */ + vector = ((mc_addr[4]) | (((u16)mc_addr[5]) << 8)); + break; + default: /* Invalid mc_filter_type */ + break; + } + + /* vector can only be 12-bits or boundary will be exceeded */ + vector &= 0xFFF; + return vector; +} + +/** + * ixgbevf_get_mac_addr_vf - Read device MAC address + * @hw: pointer to the HW structure + * @mac_addr: pointer to storage for retrieved MAC address + **/ +static s32 ixgbevf_get_mac_addr_vf(struct ixgbe_hw *hw, u8 *mac_addr) +{ + memcpy(mac_addr, hw->mac.perm_addr, IXGBE_ETH_LENGTH_OF_ADDRESS); + + return 0; +} + +/** + * ixgbevf_set_rar_vf - set device MAC address + * @hw: pointer to hardware structure + * @index: Receive address register to write + * @addr: Address to put into receive address register + * @vmdq: Unused in this implementation + **/ +static s32 ixgbevf_set_rar_vf(struct ixgbe_hw *hw, u32 index, u8 *addr, + u32 vmdq) +{ + struct ixgbe_mbx_info *mbx = &hw->mbx; + u32 msgbuf[3]; + u8 *msg_addr = (u8 *)(&msgbuf[1]); + s32 ret_val; + + memset(msgbuf, 0, sizeof(msgbuf)); + msgbuf[0] = IXGBE_VF_SET_MAC_ADDR; + memcpy(msg_addr, addr, 6); + ret_val = mbx->ops.write_posted(hw, msgbuf, 3); + + if (!ret_val) + ret_val = mbx->ops.read_posted(hw, msgbuf, 3); + + msgbuf[0] &= ~IXGBE_VT_MSGTYPE_CTS; + + /* if nacked the address was rejected, use "perm_addr" */ + if (!ret_val && + (msgbuf[0] == (IXGBE_VF_SET_MAC_ADDR | IXGBE_VT_MSGTYPE_NACK))) + ixgbevf_get_mac_addr_vf(hw, hw->mac.addr); + + return ret_val; +} + +/** + * ixgbevf_update_mc_addr_list_vf - Update Multicast addresses + * @hw: pointer to the HW structure + * @mc_addr_list: array of multicast addresses to program + * @mc_addr_count: number of multicast addresses to program + * @next: caller supplied function to return next address in list + * + * Updates the Multicast Table Array. + **/ +static s32 ixgbevf_update_mc_addr_list_vf(struct ixgbe_hw *hw, u8 *mc_addr_list, + u32 mc_addr_count, + ixgbe_mc_addr_itr next) +{ + struct ixgbe_mbx_info *mbx = &hw->mbx; + u32 msgbuf[IXGBE_VFMAILBOX_SIZE]; + u16 *vector_list = (u16 *)&msgbuf[1]; + u32 vector; + u32 cnt, i; + u32 vmdq; + + /* Each entry in the list uses 1 16 bit word. We have 30 + * 16 bit words available in our HW msg buffer (minus 1 for the + * msg type). That's 30 hash values if we pack 'em right. If + * there are more than 30 MC addresses to add then punt the + * extras for now and then add code to handle more than 30 later. + * It would be unusual for a server to request that many multi-cast + * addresses except for in large enterprise network environments. + */ + + cnt = (mc_addr_count > 30) ? 30 : mc_addr_count; + msgbuf[0] = IXGBE_VF_SET_MULTICAST; + msgbuf[0] |= cnt << IXGBE_VT_MSGINFO_SHIFT; + + for (i = 0; i < cnt; i++) { + vector = ixgbevf_mta_vector(hw, next(hw, &mc_addr_list, &vmdq)); + vector_list[i] = vector; + } + + mbx->ops.write_posted(hw, msgbuf, IXGBE_VFMAILBOX_SIZE); + + return 0; +} + +/** + * ixgbevf_set_vfta_vf - Set/Unset vlan filter table address + * @hw: pointer to the HW structure + * @vlan: 12 bit VLAN ID + * @vind: unused by VF drivers + * @vlan_on: if true then set bit, else clear bit + **/ +static s32 ixgbevf_set_vfta_vf(struct ixgbe_hw *hw, u32 vlan, u32 vind, + bool vlan_on) +{ + struct ixgbe_mbx_info *mbx = &hw->mbx; + u32 msgbuf[2]; + + msgbuf[0] = IXGBE_VF_SET_VLAN; + msgbuf[1] = vlan; + /* Setting the 8 bit field MSG INFO to TRUE indicates "add" */ + msgbuf[0] |= vlan_on << IXGBE_VT_MSGINFO_SHIFT; + + return mbx->ops.write_posted(hw, msgbuf, 2); +} + +/** + * ixgbevf_setup_mac_link_vf - Setup MAC link settings + * @hw: pointer to hardware structure + * @speed: Unused in this implementation + * @autoneg: Unused in this implementation + * @autoneg_wait_to_complete: Unused in this implementation + * + * Do nothing and return success. VF drivers are not allowed to change + * global settings. Maintained for driver compatibility. + **/ +static s32 ixgbevf_setup_mac_link_vf(struct ixgbe_hw *hw, + ixgbe_link_speed speed, bool autoneg, + bool autoneg_wait_to_complete) +{ + return 0; +} + +/** + * ixgbevf_check_mac_link_vf - Get link/speed status + * @hw: pointer to hardware structure + * @speed: pointer to link speed + * @link_up: true is link is up, false otherwise + * @autoneg_wait_to_complete: true when waiting for completion is needed + * + * Reads the links register to determine if link is up and the current speed + **/ +static s32 ixgbevf_check_mac_link_vf(struct ixgbe_hw *hw, + ixgbe_link_speed *speed, + bool *link_up, + bool autoneg_wait_to_complete) +{ + u32 links_reg; + + if (!(hw->mbx.ops.check_for_rst(hw))) { + *link_up = false; + *speed = 0; + return -1; + } + + links_reg = IXGBE_READ_REG(hw, IXGBE_VFLINKS); + + if (links_reg & IXGBE_LINKS_UP) + *link_up = true; + else + *link_up = false; + + if (links_reg & IXGBE_LINKS_SPEED) + *speed = IXGBE_LINK_SPEED_10GB_FULL; + else + *speed = IXGBE_LINK_SPEED_1GB_FULL; + + return 0; +} + +struct ixgbe_mac_operations ixgbevf_mac_ops = { + .init_hw = ixgbevf_init_hw_vf, + .reset_hw = ixgbevf_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_check_mac_link_vf, + .set_rar = ixgbevf_set_rar_vf, + .update_mc_addr_list = ixgbevf_update_mc_addr_list_vf, + .set_vfta = ixgbevf_set_vfta_vf, +}; + +struct ixgbevf_info ixgbevf_vf_info = { + .mac = ixgbe_mac_82599_vf, + .mac_ops = &ixgbevf_mac_ops, +}; + diff --git a/drivers/net/ixgbevf/vf.h b/drivers/net/ixgbevf/vf.h new file mode 100644 index 000000000000..799600e92700 --- /dev/null +++ b/drivers/net/ixgbevf/vf.h @@ -0,0 +1,168 @@ +/******************************************************************************* + + Intel 82599 Virtual Function driver + Copyright(c) 1999 - 2009 Intel Corporation. + + This program is free software; you can redistribute it and/or modify it + under the terms and conditions of the GNU General Public License, + version 2, as published by the Free Software Foundation. + + This program is distributed in the hope it will be useful, but WITHOUT + ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + more details. + + You should have received a copy of the GNU General Public License along with + this program; if not, write to the Free Software Foundation, Inc., + 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. + + The full GNU General Public License is included in this distribution in + the file called "COPYING". + + Contact Information: + e1000-devel Mailing List <e1000-devel@lists.sourceforge.net> + Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 + +*******************************************************************************/ + +#ifndef __IXGBE_VF_H__ +#define __IXGBE_VF_H__ + +#include <linux/pci.h> +#include <linux/delay.h> +#include <linux/interrupt.h> +#include <linux/if_ether.h> + +#include "defines.h" +#include "regs.h" +#include "mbx.h" + +struct ixgbe_hw; + +/* iterator type for walking multicast address lists */ +typedef u8* (*ixgbe_mc_addr_itr) (struct ixgbe_hw *hw, u8 **mc_addr_ptr, + u32 *vmdq); +struct ixgbe_mac_operations { + s32 (*init_hw)(struct ixgbe_hw *); + s32 (*reset_hw)(struct ixgbe_hw *); + s32 (*start_hw)(struct ixgbe_hw *); + s32 (*clear_hw_cntrs)(struct ixgbe_hw *); + enum ixgbe_media_type (*get_media_type)(struct ixgbe_hw *); + u32 (*get_supported_physical_layer)(struct ixgbe_hw *); + s32 (*get_mac_addr)(struct ixgbe_hw *, u8 *); + s32 (*stop_adapter)(struct ixgbe_hw *); + s32 (*get_bus_info)(struct ixgbe_hw *); + + /* Link */ + s32 (*setup_link)(struct ixgbe_hw *, ixgbe_link_speed, bool, bool); + s32 (*check_link)(struct ixgbe_hw *, ixgbe_link_speed *, bool *, bool); + s32 (*get_link_capabilities)(struct ixgbe_hw *, ixgbe_link_speed *, + bool *); + + /* RAR, Multicast, VLAN */ + s32 (*set_rar)(struct ixgbe_hw *, u32, u8 *, u32); + s32 (*init_rx_addrs)(struct ixgbe_hw *); + s32 (*update_mc_addr_list)(struct ixgbe_hw *, u8 *, u32, + ixgbe_mc_addr_itr); + s32 (*enable_mc)(struct ixgbe_hw *); + s32 (*disable_mc)(struct ixgbe_hw *); + s32 (*clear_vfta)(struct ixgbe_hw *); + s32 (*set_vfta)(struct ixgbe_hw *, u32, u32, bool); +}; + +enum ixgbe_mac_type { + ixgbe_mac_unknown = 0, + ixgbe_mac_82599_vf, + ixgbe_num_macs +}; + +struct ixgbe_mac_info { + struct ixgbe_mac_operations ops; + u8 addr[6]; + u8 perm_addr[6]; + + enum ixgbe_mac_type type; + + s32 mc_filter_type; + + bool get_link_status; + u32 max_tx_queues; + u32 max_rx_queues; + u32 max_msix_vectors; +}; + +struct ixgbe_mbx_operations { + s32 (*init_params)(struct ixgbe_hw *hw); + s32 (*read)(struct ixgbe_hw *, u32 *, u16); + s32 (*write)(struct ixgbe_hw *, u32 *, u16); + s32 (*read_posted)(struct ixgbe_hw *, u32 *, u16); + s32 (*write_posted)(struct ixgbe_hw *, u32 *, u16); + s32 (*check_for_msg)(struct ixgbe_hw *); + s32 (*check_for_ack)(struct ixgbe_hw *); + s32 (*check_for_rst)(struct ixgbe_hw *); +}; + +struct ixgbe_mbx_stats { + u32 msgs_tx; + u32 msgs_rx; + + u32 acks; + u32 reqs; + u32 rsts; +}; + +struct ixgbe_mbx_info { + struct ixgbe_mbx_operations ops; + struct ixgbe_mbx_stats stats; + u32 timeout; + u32 udelay; + u32 v2p_mailbox; + u16 size; +}; + +struct ixgbe_hw { + void *back; + + u8 __iomem *hw_addr; + u8 *flash_address; + unsigned long io_base; + + struct ixgbe_mac_info mac; + struct ixgbe_mbx_info mbx; + + u16 device_id; + u16 subsystem_vendor_id; + u16 subsystem_device_id; + u16 vendor_id; + + u8 revision_id; + bool adapter_stopped; +}; + +struct ixgbevf_hw_stats { + u64 base_vfgprc; + u64 base_vfgptc; + u64 base_vfgorc; + u64 base_vfgotc; + u64 base_vfmprc; + + u64 last_vfgprc; + u64 last_vfgptc; + u64 last_vfgorc; + u64 last_vfgotc; + u64 last_vfmprc; + + u64 vfgprc; + u64 vfgptc; + u64 vfgorc; + u64 vfgotc; + u64 vfmprc; +}; + +struct ixgbevf_info { + enum ixgbe_mac_type mac; + struct ixgbe_mac_operations *mac_ops; +}; + +#endif /* __IXGBE_VF_H__ */ + |
