/**********************************************************************
* Author : Cavium , Inc .
*
* Contact : support @ cavium . com
* Please include " LiquidIO " in the subject .
*
* Copyright ( c ) 2003 - 2016 Cavium , Inc .
*
* This file is free software ; you can redistribute it and / or modify
* it under the terms of the GNU General Public License , Version 2 , as
* published by the Free Software Foundation .
*
* This file is distributed in the hope that it will be useful , but
* AS - IS and WITHOUT ANY WARRANTY ; without even the implied warranty
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE , TITLE , or
* NONINFRINGEMENT . See the GNU General Public License for more
* details .
**********************************************************************/
#include <linux/pci.h>
#include <linux/netdevice.h>
#include "liquidio_common.h"
#include "octeon_droq.h"
#include "octeon_iq.h"
#include "response_manager.h"
#include "octeon_device.h"
#include "octeon_nic.h"
#include "octeon_main.h"
void *
octeon_alloc_soft_command_resp(struct octeon_device *oct,
union octeon_instr_64B *cmd,
u32 rdatasize)
{
struct octeon_soft_command *sc;
struct octeon_instr_ih3 *ih3;
struct octeon_instr_ih2 *ih2;
struct octeon_instr_irh *irh;
struct octeon_instr_rdp *rdp;
sc = (struct octeon_soft_command *)
octeon_alloc_soft_command(oct, 0 , rdatasize, 0 );
if (!sc)
return NULL;
/* Copy existing command structure into the soft command */
memcpy(&sc->cmd, cmd, sizeof (union octeon_instr_64B));
/* Add in the response related fields. Opcode and Param are already
* there .
*/
if (OCTEON_CN23XX_PF(oct) || OCTEON_CN23XX_VF(oct)) {
ih3 = (struct octeon_instr_ih3 *)&sc->cmd.cmd3.ih3;
rdp = (struct octeon_instr_rdp *)&sc->cmd.cmd3.rdp;
irh = (struct octeon_instr_irh *)&sc->cmd.cmd3.irh;
/*pkiih3 + irh + ossp[0] + ossp[1] + rdp + rptr = 40 bytes */
ih3->fsz = LIO_SOFTCMDRESP_IH3;
} else {
ih2 = (struct octeon_instr_ih2 *)&sc->cmd.cmd2.ih2;
rdp = (struct octeon_instr_rdp *)&sc->cmd.cmd2.rdp;
irh = (struct octeon_instr_irh *)&sc->cmd.cmd2.irh;
/* irh + ossp[0] + ossp[1] + rdp + rptr = 40 bytes */
ih2->fsz = LIO_SOFTCMDRESP_IH2;
}
irh->rflag = 1 ; /* a response is required */
rdp->pcie_port = oct->pcie_port;
rdp->rlen = rdatasize;
*sc->status_word = COMPLETION_WORD_INIT;
if (OCTEON_CN23XX_PF(oct) || OCTEON_CN23XX_VF(oct))
sc->cmd.cmd3.rptr = sc->dmarptr;
else
sc->cmd.cmd2.rptr = sc->dmarptr;
sc->expiry_time = jiffies + msecs_to_jiffies(LIO_SC_MAX_TMO_MS);
return sc;
}
EXPORT_SYMBOL_GPL(octeon_alloc_soft_command_resp);
int octnet_send_nic_data_pkt(struct octeon_device *oct,
struct octnic_data_pkt *ndata,
int xmit_more)
{
int ring_doorbell = !xmit_more;
return octeon_send_command(oct, ndata->q_no, ring_doorbell, &ndata->cmd,
ndata->buf, ndata->datasize,
ndata->reqtype);
}
EXPORT_SYMBOL_GPL(octnet_send_nic_data_pkt);
static inline struct octeon_soft_command
*octnic_alloc_ctrl_pkt_sc(struct octeon_device *oct,
struct octnic_ctrl_pkt *nctrl)
{
struct octeon_soft_command *sc = NULL;
u8 *data;
u32 rdatasize;
u32 uddsize = 0 , datasize = 0 ;
uddsize = (u32)(nctrl->ncmd.s.more * 8 );
datasize = OCTNET_CMD_SIZE + uddsize;
rdatasize = 16 ;
sc = (struct octeon_soft_command *)
octeon_alloc_soft_command(oct, datasize, rdatasize, 0 );
if (!sc)
return NULL;
data = (u8 *)sc->virtdptr;
memcpy(data, &nctrl->ncmd, OCTNET_CMD_SIZE);
octeon_swap_8B_data((u64 *)data, (OCTNET_CMD_SIZE >> 3 ));
if (uddsize) {
/* Endian-Swap for UDD should have been done by caller. */
memcpy(data + OCTNET_CMD_SIZE, nctrl->udd, uddsize);
}
sc->iq_no = (u32)nctrl->iq_no;
octeon_prepare_soft_command(oct, sc, OPCODE_NIC, OPCODE_NIC_CMD,
0 , 0 , 0 );
init_completion(&sc->complete);
sc->sc_status = OCTEON_REQUEST_PENDING;
return sc;
}
int
octnet_send_nic_ctrl_pkt(struct octeon_device *oct,
struct octnic_ctrl_pkt *nctrl)
{
int retval;
struct octeon_soft_command *sc = NULL;
spin_lock_bh(&oct->cmd_resp_wqlock);
/* Allow only rx ctrl command to stop traffic on the chip
* during offline operations
*/
if ((oct->cmd_resp_state == OCT_DRV_OFFLINE) &&
(nctrl->ncmd.s.cmd != OCTNET_CMD_RX_CTL)) {
spin_unlock_bh(&oct->cmd_resp_wqlock);
dev_err(&oct->pci_dev->dev,
"%s cmd:%d not processed since driver offline\n" ,
__func__, nctrl->ncmd.s.cmd);
return -1 ;
}
sc = octnic_alloc_ctrl_pkt_sc(oct, nctrl);
if (!sc) {
dev_err(&oct->pci_dev->dev, "%s soft command alloc failed\n" ,
__func__);
spin_unlock_bh(&oct->cmd_resp_wqlock);
return -1 ;
}
retval = octeon_send_soft_command(oct, sc);
if (retval == IQ_SEND_FAILED) {
octeon_free_soft_command(oct, sc);
dev_err(&oct->pci_dev->dev, "%s pf_num:%d soft command:%d send failed status: %x\n" ,
__func__, oct->pf_num, nctrl->ncmd.s.cmd, retval);
spin_unlock_bh(&oct->cmd_resp_wqlock);
return -1 ;
}
spin_unlock_bh(&oct->cmd_resp_wqlock);
if (nctrl->ncmd.s.cmdgroup == 0 ) {
switch (nctrl->ncmd.s.cmd) {
/* caller holds lock, can not sleep */
case OCTNET_CMD_CHANGE_DEVFLAGS:
case OCTNET_CMD_SET_MULTI_LIST:
case OCTNET_CMD_SET_UC_LIST:
WRITE_ONCE(sc->caller_is_done, true );
return retval;
}
}
retval = wait_for_sc_completion_timeout(oct, sc, 0 );
if (retval)
return (retval);
nctrl->sc_status = sc->sc_status;
retval = nctrl->sc_status;
if (nctrl->cb_fn)
nctrl->cb_fn(nctrl);
WRITE_ONCE(sc->caller_is_done, true );
return retval;
}
EXPORT_SYMBOL_GPL(octnet_send_nic_ctrl_pkt);
Messung V0.5 in Prozent C=94 H=92 G=92
¤ Dauer der Verarbeitung: 0.9 Sekunden
(vorverarbeitet am 2026-10-12)
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