diff options
Diffstat (limited to 'qemu/roms/ipxe/src/drivers/net/intelvf.c')
| -rw-r--r-- | qemu/roms/ipxe/src/drivers/net/intelvf.c | 340 |
1 files changed, 0 insertions, 340 deletions
diff --git a/qemu/roms/ipxe/src/drivers/net/intelvf.c b/qemu/roms/ipxe/src/drivers/net/intelvf.c deleted file mode 100644 index ac6fea745..000000000 --- a/qemu/roms/ipxe/src/drivers/net/intelvf.c +++ /dev/null @@ -1,340 +0,0 @@ -/* - * Copyright (C) 2015 Michael Brown <mbrown@fensystems.co.uk>. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of the - * License, or (at your option) any later version. - * - * This program is distributed in the hope that 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 Street, Fifth Floor, Boston, MA - * 02110-1301, USA. - * - * You can also choose to distribute this program under the terms of - * the Unmodified Binary Distribution Licence (as given in the file - * COPYING.UBDL), provided that you have satisfied its requirements. - */ - -FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL ); - -#include <string.h> -#include <unistd.h> -#include <errno.h> -#include <ipxe/io.h> -#include <ipxe/netdevice.h> -#include <ipxe/ethernet.h> -#include "intelvf.h" - -/** @file - * - * Intel 10/100/1000 virtual function network card driver - * - */ - -/****************************************************************************** - * - * Mailbox messages - * - ****************************************************************************** - */ - -/** - * Write message to mailbox - * - * @v intel Intel device - * @v msg Message - */ -static void intelvf_mbox_write ( struct intel_nic *intel, - const union intelvf_msg *msg ) { - unsigned int i; - - /* Write message */ - DBGC2 ( intel, "INTEL %p sending message", intel ); - for ( i = 0 ; i < ( sizeof ( *msg ) / sizeof ( msg->dword[0] ) ) ; i++){ - DBGC2 ( intel, "%c%08x", ( i ? ':' : ' ' ), msg->dword[i] ); - writel ( msg->dword[i], ( intel->regs + intel->mbox.mem + - ( i * sizeof ( msg->dword[0] ) ) ) ); - } - DBGC2 ( intel, "\n" ); -} - -/** - * Read message from mailbox - * - * @v intel Intel device - * @v msg Message - */ -static void intelvf_mbox_read ( struct intel_nic *intel, - union intelvf_msg *msg ) { - unsigned int i; - - /* Read message */ - DBGC2 ( intel, "INTEL %p received message", intel ); - for ( i = 0 ; i < ( sizeof ( *msg ) / sizeof ( msg->dword[0] ) ) ; i++){ - msg->dword[i] = readl ( intel->regs + intel->mbox.mem + - ( i * sizeof ( msg->dword[0] ) ) ); - DBGC2 ( intel, "%c%08x", ( i ? ':' : ' ' ), msg->dword[i] ); - } - DBGC2 ( intel, "\n" ); -} - -/** - * Poll mailbox - * - * @v intel Intel device - * @ret rc Return status code - * - * Note that polling the mailbox may fail if the underlying PF is - * reset. - */ -int intelvf_mbox_poll ( struct intel_nic *intel ) { - struct intel_mailbox *mbox = &intel->mbox; - union intelvf_msg msg; - uint32_t ctrl; - - /* Get mailbox status */ - ctrl = readl ( intel->regs + mbox->ctrl ); - - /* Fail if a reset is in progress */ - if ( ctrl & INTELVF_MBCTRL_RSTI ) - return -EPIPE; - - /* Acknowledge (and ignore) any received messages */ - if ( ctrl & INTELVF_MBCTRL_PFSTS ) { - intelvf_mbox_read ( intel, &msg ); - writel ( INTELVF_MBCTRL_ACK, intel->regs + mbox->ctrl ); - } - - return 0; -} - -/** - * Wait for PF reset to complete - * - * @v intel Intel device - * @ret rc Return status code - */ -int intelvf_mbox_wait ( struct intel_nic *intel ) { - unsigned int i; - int rc; - - /* Wait until a poll completes successfully */ - for ( i = 0 ; i < INTELVF_MBOX_MAX_WAIT_MS ; i++ ) { - - /* Check for successful poll */ - if ( ( rc = intelvf_mbox_poll ( intel ) ) == 0 ) - return 0; - - /* Delay */ - mdelay ( 1 ); - } - - DBGC ( intel, "INTEL %p timed out waiting for reset\n", intel ); - return -ETIMEDOUT; -} - -/** - * Send/receive mailbox message - * - * @v intel Intel device - * @v msg Message buffer - * @ret rc Return status code - */ -int intelvf_mbox_msg ( struct intel_nic *intel, union intelvf_msg *msg ) { - struct intel_mailbox *mbox = &intel->mbox; - uint32_t ctrl; - uint32_t seen = 0; - unsigned int i; - - /* Sanity check */ - assert ( ! ( msg->hdr & INTELVF_MSG_RESPONSE ) ); - - /* Handle mailbox */ - for ( i = 0 ; i < INTELVF_MBOX_MAX_WAIT_MS ; i++ ) { - - /* Attempt to claim mailbox, if we have not yet sent - * our message. - */ - if ( ! ( seen & INTELVF_MBCTRL_VFU ) ) - writel ( INTELVF_MBCTRL_VFU, intel->regs + mbox->ctrl ); - - /* Get mailbox status and record observed flags */ - ctrl = readl ( intel->regs + mbox->ctrl ); - seen |= ctrl; - - /* If a reset is in progress, clear VFU and abort */ - if ( ctrl & INTELVF_MBCTRL_RSTI ) { - writel ( 0, intel->regs + mbox->ctrl ); - return -EPIPE; - } - - /* Write message to mailbox, if applicable. This - * potentially overwrites a message sent by the PF (if - * the PF has simultaneously released PFU (thus - * allowing our VFU) and asserted PFSTS), but that - * doesn't really matter since there are no - * unsolicited PF->VF messages that require the actual - * message content to be observed. - */ - if ( ctrl & INTELVF_MBCTRL_VFU ) - intelvf_mbox_write ( intel, msg ); - - /* Read message from mailbox, if applicable. */ - if ( ( seen & INTELVF_MBCTRL_VFU ) && - ( seen & INTELVF_MBCTRL_PFACK ) && - ( ctrl & INTELVF_MBCTRL_PFSTS ) ) - intelvf_mbox_read ( intel, msg ); - - /* Acknowledge received message (if applicable), - * release VFU lock, and send message (if applicable). - */ - ctrl = ( ( ( ctrl & INTELVF_MBCTRL_PFSTS ) ? - INTELVF_MBCTRL_ACK : 0 ) | - ( ( ctrl & INTELVF_MBCTRL_VFU ) ? - INTELVF_MBCTRL_REQ : 0 ) ); - writel ( ctrl, intel->regs + mbox->ctrl ); - - /* Exit successfully if we have received a response */ - if ( msg->hdr & INTELVF_MSG_RESPONSE ) { - - /* Sanity check */ - assert ( seen & INTELVF_MBCTRL_VFU ); - assert ( seen & INTELVF_MBCTRL_PFACK ); - assert ( seen & INTELVF_MBCTRL_PFSTS ); - - return 0; - } - - /* Delay */ - mdelay ( 1 ); - } - - DBGC ( intel, "INTEL %p timed out waiting for mailbox (seen %08x)\n", - intel, seen ); - return -ETIMEDOUT; -} - -/** - * Send reset message and get initial MAC address - * - * @v intel Intel device - * @v hw_addr Hardware address to fill in, or NULL - * @ret rc Return status code - */ -int intelvf_mbox_reset ( struct intel_nic *intel, uint8_t *hw_addr ) { - union intelvf_msg msg; - int rc; - - /* Send reset message */ - memset ( &msg, 0, sizeof ( msg ) ); - msg.hdr = INTELVF_MSG_TYPE_RESET; - if ( ( rc = intelvf_mbox_msg ( intel, &msg ) ) != 0 ) { - DBGC ( intel, "INTEL %p reset failed: %s\n", - intel, strerror ( rc ) ); - return rc; - } - - /* Check response */ - if ( ( msg.hdr & INTELVF_MSG_TYPE_MASK ) != INTELVF_MSG_TYPE_RESET ) { - DBGC ( intel, "INTEL %p reset unexpected response:\n", intel ); - DBGC_HDA ( intel, 0, &msg, sizeof ( msg ) ); - return -EPROTO; - } - - /* Fill in MAC address, if applicable */ - if ( hw_addr ) { - if ( msg.hdr & INTELVF_MSG_ACK ) { - memcpy ( hw_addr, msg.mac.mac, sizeof ( msg.mac.mac ) ); - DBGC ( intel, "INTEL %p reset assigned MAC address " - "%s\n", intel, eth_ntoa ( hw_addr ) ); - } else { - eth_random_addr ( hw_addr ); - DBGC ( intel, "INTEL %p reset generated MAC address " - "%s\n", intel, eth_ntoa ( hw_addr ) ); - } - } - - return 0; -} - -/** - * Send set MAC address message - * - * @v intel Intel device - * @v ll_addr Link-layer address - * @ret rc Return status code - */ -int intelvf_mbox_set_mac ( struct intel_nic *intel, const uint8_t *ll_addr ) { - union intelvf_msg msg; - int rc; - - /* Send set MAC address message */ - memset ( &msg, 0, sizeof ( msg ) ); - msg.hdr = INTELVF_MSG_TYPE_SET_MAC; - memcpy ( msg.mac.mac, ll_addr, sizeof ( msg.mac.mac ) ); - if ( ( rc = intelvf_mbox_msg ( intel, &msg ) ) != 0 ) { - DBGC ( intel, "INTEL %p set MAC address failed: %s\n", - intel, strerror ( rc ) ); - return rc; - } - - /* Check response */ - if ( ( msg.hdr & INTELVF_MSG_TYPE_MASK ) != INTELVF_MSG_TYPE_SET_MAC ) { - DBGC ( intel, "INTEL %p set MAC address unexpected response:\n", - intel ); - DBGC_HDA ( intel, 0, &msg, sizeof ( msg ) ); - return -EPROTO; - } - - /* Check that we were allowed to set the MAC address */ - if ( ! ( msg.hdr & INTELVF_MSG_ACK ) ) { - DBGC ( intel, "INTEL %p set MAC address refused\n", intel ); - return -EPERM; - } - - return 0; -} - -/** - * Send set MTU message - * - * @v intel Intel device - * @v mtu Maximum packet size - * @ret rc Return status code - */ -int intelvf_mbox_set_mtu ( struct intel_nic *intel, size_t mtu ) { - union intelvf_msg msg; - int rc; - - /* Send set MTU message */ - memset ( &msg, 0, sizeof ( msg ) ); - msg.hdr = INTELVF_MSG_TYPE_SET_MTU; - msg.mtu.mtu = mtu; - if ( ( rc = intelvf_mbox_msg ( intel, &msg ) ) != 0 ) { - DBGC ( intel, "INTEL %p set MTU failed: %s\n", - intel, strerror ( rc ) ); - return rc; - } - - /* Check response */ - if ( ( msg.hdr & INTELVF_MSG_TYPE_MASK ) != INTELVF_MSG_TYPE_SET_MTU ) { - DBGC ( intel, "INTEL %p set MTU unexpected response:\n", - intel ); - DBGC_HDA ( intel, 0, &msg, sizeof ( msg ) ); - return -EPROTO; - } - - /* Check that we were allowed to set the MTU */ - if ( ! ( msg.hdr & INTELVF_MSG_ACK ) ) { - DBGC ( intel, "INTEL %p set MTU refused\n", intel ); - return -EPERM; - } - - return 0; -} |