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freebsd-dev/sys/ofed/drivers/net/mlx4/cmd.c
Hans Petter Selasky 2b8859521d Updates for the Mellanox ethernet driver 
> List of fixes:
  * use correct format for GID printouts
  * double array indexing
  * spelling in printouts
  * void pointer arithmetic
  * allow more receive rings
  * correct maximum number of transmit rings
  * use "const" instead of "static" for constants
  * check for invalid VLAN tags
  * check for lack of IRQ resources
> Added more hardware specific defines
> Added more verbose printouts of firmware status codes

Sponsored by:	Mellanox Technologies
MFC after:	3 days
2015-03-04 09:30:03 +00:00

2606 lines
69 KiB
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/*
* Copyright (c) 2004, 2005 Topspin Communications. All rights reserved.
* Copyright (c) 2005, 2006, 2007, 2008, 2014 Mellanox Technologies. All rights reserved.
* Copyright (c) 2005, 2006, 2007 Cisco Systems, Inc. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
* General Public License (GPL) Version 2, available from the file
* COPYING in the main directory of this source tree, or the
* OpenIB.org BSD license below:
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer.
*
* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include <linux/sched.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/errno.h>
#include <linux/mlx4/cmd.h>
#include <linux/mlx4/device.h>
#include <linux/semaphore.h>
#include <rdma/ib_smi.h>
#include <asm/io.h>
#include <linux/ktime.h>
#include "mlx4.h"
#include "fw.h"
#define CMD_POLL_TOKEN 0xffff
#define INBOX_MASK 0xffffffffffffff00ULL
#define CMD_CHAN_VER 1
#define CMD_CHAN_IF_REV 1
enum {
/* command completed successfully: */
CMD_STAT_OK = 0x00,
/* Internal error (such as a bus error) occurred while processing command: */
CMD_STAT_INTERNAL_ERR = 0x01,
/* Operation/command not supported or opcode modifier not supported: */
CMD_STAT_BAD_OP = 0x02,
/* Parameter not supported or parameter out of range: */
CMD_STAT_BAD_PARAM = 0x03,
/* System not enabled or bad system state: */
CMD_STAT_BAD_SYS_STATE = 0x04,
/* Attempt to access reserved or unallocaterd resource: */
CMD_STAT_BAD_RESOURCE = 0x05,
/* Requested resource is currently executing a command, or is otherwise busy: */
CMD_STAT_RESOURCE_BUSY = 0x06,
/* Required capability exceeds device limits: */
CMD_STAT_EXCEED_LIM = 0x08,
/* Resource is not in the appropriate state or ownership: */
CMD_STAT_BAD_RES_STATE = 0x09,
/* Index out of range: */
CMD_STAT_BAD_INDEX = 0x0a,
/* FW image corrupted: */
CMD_STAT_BAD_NVMEM = 0x0b,
/* Error in ICM mapping (e.g. not enough auxiliary ICM pages to execute command): */
CMD_STAT_ICM_ERROR = 0x0c,
/* Attempt to modify a QP/EE which is not in the presumed state: */
CMD_STAT_BAD_QP_STATE = 0x10,
/* Bad segment parameters (Address/Size): */
CMD_STAT_BAD_SEG_PARAM = 0x20,
/* Memory Region has Memory Windows bound to: */
CMD_STAT_REG_BOUND = 0x21,
/* HCA local attached memory not present: */
CMD_STAT_LAM_NOT_PRE = 0x22,
/* Bad management packet (silently discarded): */
CMD_STAT_BAD_PKT = 0x30,
/* More outstanding CQEs in CQ than new CQ size: */
CMD_STAT_BAD_SIZE = 0x40,
/* Multi Function device support required: */
CMD_STAT_MULTI_FUNC_REQ = 0x50,
};
enum {
HCR_IN_PARAM_OFFSET = 0x00,
HCR_IN_MODIFIER_OFFSET = 0x08,
HCR_OUT_PARAM_OFFSET = 0x0c,
HCR_TOKEN_OFFSET = 0x14,
HCR_STATUS_OFFSET = 0x18,
HCR_OPMOD_SHIFT = 12,
HCR_T_BIT = 21,
HCR_E_BIT = 22,
HCR_GO_BIT = 23
};
enum {
GO_BIT_TIMEOUT_MSECS = 10000
};
enum mlx4_vlan_transition {
MLX4_VLAN_TRANSITION_VST_VST = 0,
MLX4_VLAN_TRANSITION_VST_VGT = 1,
MLX4_VLAN_TRANSITION_VGT_VST = 2,
MLX4_VLAN_TRANSITION_VGT_VGT = 3,
};
struct mlx4_cmd_context {
struct completion done;
int result;
int next;
u64 out_param;
u16 token;
u8 fw_status;
};
static int mlx4_master_process_vhcr(struct mlx4_dev *dev, int slave,
struct mlx4_vhcr_cmd *in_vhcr);
static int mlx4_status_to_errno(u8 status)
{
static const int trans_table[] = {
[CMD_STAT_INTERNAL_ERR] = -EIO,
[CMD_STAT_BAD_OP] = -EPERM,
[CMD_STAT_BAD_PARAM] = -EINVAL,
[CMD_STAT_BAD_SYS_STATE] = -ENXIO,
[CMD_STAT_BAD_RESOURCE] = -EBADF,
[CMD_STAT_RESOURCE_BUSY] = -EBUSY,
[CMD_STAT_EXCEED_LIM] = -ENOMEM,
[CMD_STAT_BAD_RES_STATE] = -EBADF,
[CMD_STAT_BAD_INDEX] = -EBADF,
[CMD_STAT_BAD_NVMEM] = -EFAULT,
[CMD_STAT_ICM_ERROR] = -ENFILE,
[CMD_STAT_BAD_QP_STATE] = -EINVAL,
[CMD_STAT_BAD_SEG_PARAM] = -EFAULT,
[CMD_STAT_REG_BOUND] = -EBUSY,
[CMD_STAT_LAM_NOT_PRE] = -EAGAIN,
[CMD_STAT_BAD_PKT] = -EINVAL,
[CMD_STAT_BAD_SIZE] = -ENOMEM,
[CMD_STAT_MULTI_FUNC_REQ] = -EACCES,
};
if (status >= ARRAY_SIZE(trans_table) ||
(status != CMD_STAT_OK && trans_table[status] == 0))
return -EIO;
return trans_table[status];
}
static const char *cmd_to_str(u16 cmd)
{
switch (cmd) {
case MLX4_CMD_SYS_EN: return "SYS_EN";
case MLX4_CMD_SYS_DIS: return "SYS_DIS";
case MLX4_CMD_MAP_FA: return "MAP_FA";
case MLX4_CMD_UNMAP_FA: return "UNMAP_FA";
case MLX4_CMD_RUN_FW: return "RUN_FW";
case MLX4_CMD_MOD_STAT_CFG: return "MOD_STAT_CFG";
case MLX4_CMD_QUERY_DEV_CAP: return "QUERY_DEV_CAP";
case MLX4_CMD_QUERY_FW: return "QUERY_FW";
case MLX4_CMD_ENABLE_LAM: return "ENABLE_LAM";
case MLX4_CMD_DISABLE_LAM: return "DISABLE_LAM";
case MLX4_CMD_QUERY_DDR: return "QUERY_DDR";
case MLX4_CMD_QUERY_ADAPTER: return "QUERY_ADAPTER";
case MLX4_CMD_INIT_HCA: return "INIT_HCA";
case MLX4_CMD_CLOSE_HCA: return "CLOSE_HCA";
case MLX4_CMD_INIT_PORT: return "INIT_PORT";
case MLX4_CMD_CLOSE_PORT: return "CLOSE_PORT";
case MLX4_CMD_QUERY_HCA: return "QUERY_HCA";
case MLX4_CMD_QUERY_PORT: return "QUERY_PORT";
case MLX4_CMD_SENSE_PORT: return "SENSE_PORT";
case MLX4_CMD_HW_HEALTH_CHECK: return "HW_HEALTH_CHECK";
case MLX4_CMD_SET_PORT: return "SET_PORT";
case MLX4_CMD_SET_NODE: return "SET_NODE";
case MLX4_CMD_QUERY_FUNC: return "QUERY_FUNC";
case MLX4_CMD_MAP_ICM: return "MAP_ICM";
case MLX4_CMD_UNMAP_ICM: return "UNMAP_ICM";
case MLX4_CMD_MAP_ICM_AUX: return "MAP_ICM_AUX";
case MLX4_CMD_UNMAP_ICM_AUX: return "UNMAP_ICM_AUX";
case MLX4_CMD_SET_ICM_SIZE: return "SET_ICM_SIZE";
/*master notify fw on finish for slave's flr*/
case MLX4_CMD_INFORM_FLR_DONE: return "INFORM_FLR_DONE";
case MLX4_CMD_GET_OP_REQ: return "GET_OP_REQ";
/* TPT commands */
case MLX4_CMD_SW2HW_MPT: return "SW2HW_MPT";
case MLX4_CMD_QUERY_MPT: return "QUERY_MPT";
case MLX4_CMD_HW2SW_MPT: return "HW2SW_MPT";
case MLX4_CMD_READ_MTT: return "READ_MTT";
case MLX4_CMD_WRITE_MTT: return "WRITE_MTT";
case MLX4_CMD_SYNC_TPT: return "SYNC_TPT";
/* EQ commands */
case MLX4_CMD_MAP_EQ: return "MAP_EQ";
case MLX4_CMD_SW2HW_EQ: return "SW2HW_EQ";
case MLX4_CMD_HW2SW_EQ: return "HW2SW_EQ";
case MLX4_CMD_QUERY_EQ: return "QUERY_EQ";
/* CQ commands */
case MLX4_CMD_SW2HW_CQ: return "SW2HW_CQ";
case MLX4_CMD_HW2SW_CQ: return "HW2SW_CQ";
case MLX4_CMD_QUERY_CQ: return "QUERY_CQ:";
case MLX4_CMD_MODIFY_CQ: return "MODIFY_CQ:";
/* SRQ commands */
case MLX4_CMD_SW2HW_SRQ: return "SW2HW_SRQ";
case MLX4_CMD_HW2SW_SRQ: return "HW2SW_SRQ";
case MLX4_CMD_QUERY_SRQ: return "QUERY_SRQ";
case MLX4_CMD_ARM_SRQ: return "ARM_SRQ";
/* QP/EE commands */
case MLX4_CMD_RST2INIT_QP: return "RST2INIT_QP";
case MLX4_CMD_INIT2RTR_QP: return "INIT2RTR_QP";
case MLX4_CMD_RTR2RTS_QP: return "RTR2RTS_QP";
case MLX4_CMD_RTS2RTS_QP: return "RTS2RTS_QP";
case MLX4_CMD_SQERR2RTS_QP: return "SQERR2RTS_QP";
case MLX4_CMD_2ERR_QP: return "2ERR_QP";
case MLX4_CMD_RTS2SQD_QP: return "RTS2SQD_QP";
case MLX4_CMD_SQD2SQD_QP: return "SQD2SQD_QP";
case MLX4_CMD_SQD2RTS_QP: return "SQD2RTS_QP";
case MLX4_CMD_2RST_QP: return "2RST_QP";
case MLX4_CMD_QUERY_QP: return "QUERY_QP";
case MLX4_CMD_INIT2INIT_QP: return "INIT2INIT_QP";
case MLX4_CMD_SUSPEND_QP: return "SUSPEND_QP";
case MLX4_CMD_UNSUSPEND_QP: return "UNSUSPEND_QP";
/* special QP and management commands */
case MLX4_CMD_CONF_SPECIAL_QP: return "CONF_SPECIAL_QP";
case MLX4_CMD_MAD_IFC: return "MAD_IFC";
/* multicast commands */
case MLX4_CMD_READ_MCG: return "READ_MCG";
case MLX4_CMD_WRITE_MCG: return "WRITE_MCG";
case MLX4_CMD_MGID_HASH: return "MGID_HASH";
/* miscellaneous commands */
case MLX4_CMD_DIAG_RPRT: return "DIAG_RPRT";
case MLX4_CMD_NOP: return "NOP";
case MLX4_CMD_ACCESS_MEM: return "ACCESS_MEM";
case MLX4_CMD_SET_VEP: return "SET_VEP";
/* Ethernet specific commands */
case MLX4_CMD_SET_VLAN_FLTR: return "SET_VLAN_FLTR";
case MLX4_CMD_SET_MCAST_FLTR: return "SET_MCAST_FLTR";
case MLX4_CMD_DUMP_ETH_STATS: return "DUMP_ETH_STATS";
/* Communication channel commands */
case MLX4_CMD_ARM_COMM_CHANNEL: return "ARM_COMM_CHANNEL";
case MLX4_CMD_GEN_EQE: return "GEN_EQE";
/* virtual commands */
case MLX4_CMD_ALLOC_RES: return "ALLOC_RES";
case MLX4_CMD_FREE_RES: return "FREE_RES";
case MLX4_CMD_MCAST_ATTACH: return "MCAST_ATTACH";
case MLX4_CMD_UCAST_ATTACH: return "UCAST_ATTACH";
case MLX4_CMD_PROMISC: return "PROMISC";
case MLX4_CMD_QUERY_FUNC_CAP: return "QUERY_FUNC_CAP";
case MLX4_CMD_QP_ATTACH: return "QP_ATTACH";
/* debug commands */
case MLX4_CMD_QUERY_DEBUG_MSG: return "QUERY_DEBUG_MSG";
case MLX4_CMD_SET_DEBUG_MSG: return "SET_DEBUG_MSG";
/* statistics commands */
case MLX4_CMD_QUERY_IF_STAT: return "QUERY_IF_STAT";
case MLX4_CMD_SET_IF_STAT: return "SET_IF_STAT";
/* register/delete flow steering network rules */
case MLX4_QP_FLOW_STEERING_ATTACH: return "QP_FLOW_STEERING_ATTACH";
case MLX4_QP_FLOW_STEERING_DETACH: return "QP_FLOW_STEERING_DETACH";
case MLX4_FLOW_STEERING_IB_UC_QP_RANGE: return "FLOW_STEERING_IB_UC_QP_RANGE";
default: return "OTHER";
}
}
static u8 mlx4_errno_to_status(int errno)
{
switch (errno) {
case -EPERM:
return CMD_STAT_BAD_OP;
case -EINVAL:
return CMD_STAT_BAD_PARAM;
case -ENXIO:
return CMD_STAT_BAD_SYS_STATE;
case -EBUSY:
return CMD_STAT_RESOURCE_BUSY;
case -ENOMEM:
return CMD_STAT_EXCEED_LIM;
case -ENFILE:
return CMD_STAT_ICM_ERROR;
default:
return CMD_STAT_INTERNAL_ERR;
}
}
static int comm_pending(struct mlx4_dev *dev)
{
struct mlx4_priv *priv = mlx4_priv(dev);
u32 status = readl(&priv->mfunc.comm->slave_read);
return (swab32(status) >> 31) != priv->cmd.comm_toggle;
}
static void mlx4_comm_cmd_post(struct mlx4_dev *dev, u8 cmd, u16 param)
{
struct mlx4_priv *priv = mlx4_priv(dev);
u32 val;
priv->cmd.comm_toggle ^= 1;
val = param | (cmd << 16) | (priv->cmd.comm_toggle << 31);
__raw_writel((__force u32) cpu_to_be32(val),
&priv->mfunc.comm->slave_write);
mmiowb();
}
static int mlx4_comm_cmd_poll(struct mlx4_dev *dev, u8 cmd, u16 param,
unsigned long timeout)
{
struct mlx4_priv *priv = mlx4_priv(dev);
unsigned long end;
int err = 0;
int ret_from_pending = 0;
/* First, verify that the master reports correct status */
if (comm_pending(dev)) {
mlx4_warn(dev, "Communication channel is not idle."
"my toggle is %d (cmd:0x%x)\n",
priv->cmd.comm_toggle, cmd);
return -EAGAIN;
}
/* Write command */
down(&priv->cmd.poll_sem);
mlx4_comm_cmd_post(dev, cmd, param);
end = msecs_to_jiffies(timeout) + jiffies;
while (comm_pending(dev) && time_before(jiffies, end))
cond_resched();
ret_from_pending = comm_pending(dev);
if (ret_from_pending) {
/* check if the slave is trying to boot in the middle of
* FLR process. The only non-zero result in the RESET command
* is MLX4_DELAY_RESET_SLAVE*/
if ((MLX4_COMM_CMD_RESET == cmd)) {
mlx4_warn(dev, "Got slave FLRed from Communication"
" channel (ret:0x%x)\n", ret_from_pending);
err = MLX4_DELAY_RESET_SLAVE;
} else {
mlx4_warn(dev, "Communication channel timed out\n");
err = -ETIMEDOUT;
}
}
up(&priv->cmd.poll_sem);
return err;
}
static int mlx4_comm_cmd_wait(struct mlx4_dev *dev, u8 op,
u16 param, unsigned long timeout)
{
struct mlx4_cmd *cmd = &mlx4_priv(dev)->cmd;
struct mlx4_cmd_context *context;
unsigned long end;
int err = 0;
down(&cmd->event_sem);
end = msecs_to_jiffies(timeout) + jiffies;
while (comm_pending(dev) && time_before(jiffies, end))
cond_resched();
if (comm_pending(dev)) {
mlx4_warn(dev, "mlx4_comm_cmd_wait: Comm channel "
"is not idle. My toggle is %d (op: 0x%x)\n",
mlx4_priv(dev)->cmd.comm_toggle, op);
up(&cmd->event_sem);
return -EAGAIN;
}
spin_lock(&cmd->context_lock);
BUG_ON(cmd->free_head < 0);
context = &cmd->context[cmd->free_head];
context->token += cmd->token_mask + 1;
cmd->free_head = context->next;
spin_unlock(&cmd->context_lock);
init_completion(&context->done);
mlx4_comm_cmd_post(dev, op, param);
/* In slave, wait unconditionally for completion */
wait_for_completion(&context->done);
err = context->result;
if (err && context->fw_status != CMD_STAT_MULTI_FUNC_REQ) {
mlx4_err(dev, "command 0x%x failed: fw status = 0x%x\n",
op, context->fw_status);
goto out;
}
out:
/* wait for comm channel ready
* this is necessary for prevention the race
* when switching between event to polling mode
*/
end = msecs_to_jiffies(timeout) + jiffies;
while (comm_pending(dev) && time_before(jiffies, end))
cond_resched();
spin_lock(&cmd->context_lock);
context->next = cmd->free_head;
cmd->free_head = context - cmd->context;
spin_unlock(&cmd->context_lock);
up(&cmd->event_sem);
return err;
}
int mlx4_comm_cmd(struct mlx4_dev *dev, u8 cmd, u16 param,
unsigned long timeout)
{
if (mlx4_priv(dev)->cmd.use_events)
return mlx4_comm_cmd_wait(dev, cmd, param, timeout);
return mlx4_comm_cmd_poll(dev, cmd, param, timeout);
}
static int cmd_pending(struct mlx4_dev *dev)
{
u32 status;
if (pci_channel_offline(dev->pdev))
return -EIO;
status = readl(mlx4_priv(dev)->cmd.hcr + HCR_STATUS_OFFSET);
return (status & swab32(1 << HCR_GO_BIT)) ||
(mlx4_priv(dev)->cmd.toggle ==
!!(status & swab32(1 << HCR_T_BIT)));
}
static int get_status(struct mlx4_dev *dev, u32 *status, int *go_bit,
int *t_bit)
{
if (pci_channel_offline(dev->pdev))
return -EIO;
*status = readl(mlx4_priv(dev)->cmd.hcr + HCR_STATUS_OFFSET);
*t_bit = !!(*status & swab32(1 << HCR_T_BIT));
*go_bit = !!(*status & swab32(1 << HCR_GO_BIT));
return 0;
}
static int mlx4_cmd_post(struct mlx4_dev *dev, struct timespec *ts1,
u64 in_param, u64 out_param, u32 in_modifier,
u8 op_modifier, u16 op, u16 token, int event)
{
struct mlx4_cmd *cmd = &mlx4_priv(dev)->cmd;
u32 __iomem *hcr = cmd->hcr;
int ret = -EAGAIN;
unsigned long end;
int err, go_bit = 0, t_bit = 0;
u32 status = 0;
mutex_lock(&cmd->hcr_mutex);
if (pci_channel_offline(dev->pdev)) {
/*
* Device is going through error recovery
* and cannot accept commands.
*/
ret = -EIO;
goto out;
}
end = jiffies;
if (event)
end += msecs_to_jiffies(GO_BIT_TIMEOUT_MSECS);
while (cmd_pending(dev)) {
if (pci_channel_offline(dev->pdev)) {
/*
* Device is going through error recovery
* and cannot accept commands.
*/
ret = -EIO;
goto out;
}
if (time_after_eq(jiffies, end)) {
mlx4_err(dev, "%s:cmd_pending failed\n", __func__);
goto out;
}
cond_resched();
}
/*
* We use writel (instead of something like memcpy_toio)
* because writes of less than 32 bits to the HCR don't work
* (and some architectures such as ia64 implement memcpy_toio
* in terms of writeb).
*/
__raw_writel((__force u32) cpu_to_be32(in_param >> 32), hcr + 0);
__raw_writel((__force u32) cpu_to_be32(in_param & 0xfffffffful), hcr + 1);
__raw_writel((__force u32) cpu_to_be32(in_modifier), hcr + 2);
__raw_writel((__force u32) cpu_to_be32(out_param >> 32), hcr + 3);
__raw_writel((__force u32) cpu_to_be32(out_param & 0xfffffffful), hcr + 4);
__raw_writel((__force u32) cpu_to_be32(token << 16), hcr + 5);
if (ts1)
ktime_get_ts(ts1);
/* __raw_writel may not order writes. */
wmb();
__raw_writel((__force u32) cpu_to_be32((1 << HCR_GO_BIT) |
(cmd->toggle << HCR_T_BIT) |
(event ? (1 << HCR_E_BIT) : 0) |
(op_modifier << HCR_OPMOD_SHIFT) |
op), hcr + 6);
/*
* Make sure that our HCR writes don't get mixed in with
* writes from another CPU starting a FW command.
*/
mmiowb();
cmd->toggle = cmd->toggle ^ 1;
ret = 0;
out:
if (ret) {
err = get_status(dev, &status, &go_bit, &t_bit);
mlx4_warn(dev, "Could not post command %s (0x%x): ret=%d, "
"in_param=0x%llx, in_mod=0x%x, op_mod=0x%x, "
"get_status err=%d, status_reg=0x%x, go_bit=%d, "
"t_bit=%d, toggle=0x%x\n", cmd_to_str(op), op, ret,
(unsigned long long) in_param, in_modifier, op_modifier, err, status,
go_bit, t_bit, cmd->toggle);
}
mutex_unlock(&cmd->hcr_mutex);
return ret;
}
static int mlx4_slave_cmd(struct mlx4_dev *dev, u64 in_param, u64 *out_param,
int out_is_imm, u32 in_modifier, u8 op_modifier,
u16 op, unsigned long timeout)
{
struct mlx4_priv *priv = mlx4_priv(dev);
struct mlx4_vhcr_cmd *vhcr = priv->mfunc.vhcr;
int ret;
mutex_lock(&priv->cmd.slave_cmd_mutex);
vhcr->in_param = cpu_to_be64(in_param);
vhcr->out_param = out_param ? cpu_to_be64(*out_param) : 0;
vhcr->in_modifier = cpu_to_be32(in_modifier);
vhcr->opcode = cpu_to_be16((((u16) op_modifier) << 12) | (op & 0xfff));
vhcr->token = cpu_to_be16(CMD_POLL_TOKEN);
vhcr->status = 0;
vhcr->flags = !!(priv->cmd.use_events) << 6;
if (mlx4_is_master(dev)) {
ret = mlx4_master_process_vhcr(dev, dev->caps.function, vhcr);
if (!ret) {
if (out_is_imm) {
if (out_param)
*out_param =
be64_to_cpu(vhcr->out_param);
else {
mlx4_err(dev, "response expected while"
"output mailbox is NULL for "
"command 0x%x\n", op);
vhcr->status = CMD_STAT_BAD_PARAM;
}
}
ret = mlx4_status_to_errno(vhcr->status);
}
} else {
ret = mlx4_comm_cmd(dev, MLX4_COMM_CMD_VHCR_POST, 0,
MLX4_COMM_TIME + timeout);
if (!ret) {
if (out_is_imm) {
if (out_param)
*out_param =
be64_to_cpu(vhcr->out_param);
else {
mlx4_err(dev, "response expected while"
"output mailbox is NULL for "
"command 0x%x\n", op);
vhcr->status = CMD_STAT_BAD_PARAM;
}
}
ret = mlx4_status_to_errno(vhcr->status);
} else
mlx4_err(dev, "failed execution of VHCR_POST command"
"opcode %s (0x%x)\n", cmd_to_str(op), op);
}
mutex_unlock(&priv->cmd.slave_cmd_mutex);
return ret;
}
static int mlx4_cmd_poll(struct mlx4_dev *dev, u64 in_param, u64 *out_param,
int out_is_imm, u32 in_modifier, u8 op_modifier,
u16 op, unsigned long timeout)
{
struct mlx4_priv *priv = mlx4_priv(dev);
void __iomem *hcr = priv->cmd.hcr;
int err = 0;
unsigned long end;
u32 stat;
down(&priv->cmd.poll_sem);
if (pci_channel_offline(dev->pdev)) {
/*
* Device is going through error recovery
* and cannot accept commands.
*/
err = -EIO;
goto out;
}
err = mlx4_cmd_post(dev, NULL, in_param, out_param ? *out_param : 0,
in_modifier, op_modifier, op, CMD_POLL_TOKEN, 0);
if (err)
goto out;
end = msecs_to_jiffies(timeout) + jiffies;
while (cmd_pending(dev) && time_before(jiffies, end)) {
if (pci_channel_offline(dev->pdev)) {
/*
* Device is going through error recovery
* and cannot accept commands.
*/
err = -EIO;
goto out;
}
cond_resched();
}
if (cmd_pending(dev)) {
mlx4_warn(dev, "command %s (0x%x) timed out (go bit not cleared)\n",
cmd_to_str(op), op);
err = -ETIMEDOUT;
goto out;
}
if (out_is_imm)
*out_param =
(u64) be32_to_cpu((__force __be32)
__raw_readl(hcr + HCR_OUT_PARAM_OFFSET)) << 32 |
(u64) be32_to_cpu((__force __be32)
__raw_readl(hcr + HCR_OUT_PARAM_OFFSET + 4));
stat = be32_to_cpu((__force __be32)
__raw_readl(hcr + HCR_STATUS_OFFSET)) >> 24;
err = mlx4_status_to_errno(stat);
if (err)
mlx4_err(dev, "command %s (0x%x) failed: fw status = 0x%x\n",
cmd_to_str(op), op, stat);
out:
up(&priv->cmd.poll_sem);
return err;
}
void mlx4_cmd_event(struct mlx4_dev *dev, u16 token, u8 status, u64 out_param)
{
struct mlx4_priv *priv = mlx4_priv(dev);
struct mlx4_cmd_context *context =
&priv->cmd.context[token & priv->cmd.token_mask];
/* previously timed out command completing at long last */
if (token != context->token)
return;
context->fw_status = status;
context->result = mlx4_status_to_errno(status);
context->out_param = out_param;
complete(&context->done);
}
static int mlx4_cmd_wait(struct mlx4_dev *dev, u64 in_param, u64 *out_param,
int out_is_imm, u32 in_modifier, u8 op_modifier,
u16 op, unsigned long timeout)
{
struct mlx4_cmd *cmd = &mlx4_priv(dev)->cmd;
struct mlx4_cmd_context *context;
int err = 0;
int go_bit = 0, t_bit = 0, stat_err;
u32 status = 0;
struct timespec ts1, ts2;
ktime_t t1, t2, delta;
s64 ds;
if (out_is_imm && !out_param)
return -EINVAL;
down(&cmd->event_sem);
spin_lock(&cmd->context_lock);
BUG_ON(cmd->free_head < 0);
context = &cmd->context[cmd->free_head];
context->token += cmd->token_mask + 1;
cmd->free_head = context->next;
spin_unlock(&cmd->context_lock);
init_completion(&context->done);
err = mlx4_cmd_post(dev, &ts1, in_param, out_param ? *out_param : 0,
in_modifier, op_modifier, op, context->token, 1);
if (err)
goto out;
if (!wait_for_completion_timeout(&context->done,
msecs_to_jiffies(timeout))) {
stat_err = get_status(dev, &status, &go_bit, &t_bit);
mlx4_warn(dev, "command %s (0x%x) timed out: in_param=0x%llx, "
"in_mod=0x%x, op_mod=0x%x, get_status err=%d, "
"status_reg=0x%x, go_bit=%d, t_bit=%d, toggle=0x%x\n"
, cmd_to_str(op), op, (unsigned long long) in_param, in_modifier,
op_modifier, stat_err, status, go_bit, t_bit,
mlx4_priv(dev)->cmd.toggle);
err = -EBUSY;
goto out;
}
if (mlx4_debug_level & MLX4_DEBUG_MASK_CMD_TIME) {
ktime_get_ts(&ts2);
t1 = timespec_to_ktime(ts1);
t2 = timespec_to_ktime(ts2);
delta = ktime_sub(t2, t1);
ds = ktime_to_ns(delta);
pr_info("mlx4: fw exec time for %s is %lld nsec\n", cmd_to_str(op), (long long) ds);
}
err = context->result;
if (err) {
mlx4_err(dev, "command %s (0x%x) failed: in_param=0x%llx, "
"in_mod=0x%x, op_mod=0x%x, fw status = 0x%x\n",
cmd_to_str(op), op, (unsigned long long) in_param, in_modifier,
op_modifier, context->fw_status);
switch(context->fw_status) {
case CMD_STAT_BAD_PARAM:
mlx4_err(dev, "Parameter is not supported, "
"parameter is out of range\n");
break;
case CMD_STAT_EXCEED_LIM:
mlx4_err(dev, "Required capability exceeded "
"device limits\n");
break;
default:
break;
}
goto out;
}
if (out_is_imm)
*out_param = context->out_param;
out:
spin_lock(&cmd->context_lock);
context->next = cmd->free_head;
cmd->free_head = context - cmd->context;
spin_unlock(&cmd->context_lock);
up(&cmd->event_sem);
return err;
}
int __mlx4_cmd(struct mlx4_dev *dev, u64 in_param, u64 *out_param,
int out_is_imm, u32 in_modifier, u8 op_modifier,
u16 op, unsigned long timeout, int native)
{
if (pci_channel_offline(dev->pdev))
return -EIO;
if (!mlx4_is_mfunc(dev) || (native && mlx4_is_master(dev))) {
if (mlx4_priv(dev)->cmd.use_events)
return mlx4_cmd_wait(dev, in_param, out_param,
out_is_imm, in_modifier,
op_modifier, op, timeout);
else
return mlx4_cmd_poll(dev, in_param, out_param,
out_is_imm, in_modifier,
op_modifier, op, timeout);
}
return mlx4_slave_cmd(dev, in_param, out_param, out_is_imm,
in_modifier, op_modifier, op, timeout);
}
EXPORT_SYMBOL_GPL(__mlx4_cmd);
static int mlx4_ARM_COMM_CHANNEL(struct mlx4_dev *dev)
{
return mlx4_cmd(dev, 0, 0, 0, MLX4_CMD_ARM_COMM_CHANNEL,
MLX4_CMD_TIME_CLASS_B, MLX4_CMD_NATIVE);
}
static int mlx4_ACCESS_MEM(struct mlx4_dev *dev, u64 master_addr,
int slave, u64 slave_addr,
int size, int is_read)
{
u64 in_param;
u64 out_param;
if ((slave_addr & 0xfff) | (master_addr & 0xfff) |
(slave & ~0x7f) | (size & 0xff)) {
mlx4_err(dev, "Bad access mem params - slave_addr:0x%llx "
"master_addr:0x%llx slave_id:%d size:%d\n",
(unsigned long long) slave_addr, (unsigned long long) master_addr, slave, size);
return -EINVAL;
}
if (is_read) {
in_param = (u64) slave | slave_addr;
out_param = (u64) dev->caps.function | master_addr;
} else {
in_param = (u64) dev->caps.function | master_addr;
out_param = (u64) slave | slave_addr;
}
return mlx4_cmd_imm(dev, in_param, &out_param, size, 0,
MLX4_CMD_ACCESS_MEM,
MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE);
}
static int query_pkey_block(struct mlx4_dev *dev, u8 port, u16 index, u16 *pkey,
struct mlx4_cmd_mailbox *inbox,
struct mlx4_cmd_mailbox *outbox)
{
struct ib_smp *in_mad = (struct ib_smp *)(inbox->buf);
struct ib_smp *out_mad = (struct ib_smp *)(outbox->buf);
int err;
int i;
if (index & 0x1f)
return -EINVAL;
in_mad->attr_mod = cpu_to_be32(index / 32);
err = mlx4_cmd_box(dev, inbox->dma, outbox->dma, port, 3,
MLX4_CMD_MAD_IFC, MLX4_CMD_TIME_CLASS_C,
MLX4_CMD_NATIVE);
if (err)
return err;
for (i = 0; i < 32; ++i)
pkey[i] = be16_to_cpu(((__be16 *) out_mad->data)[i]);
return err;
}
static int get_full_pkey_table(struct mlx4_dev *dev, u8 port, u16 *table,
struct mlx4_cmd_mailbox *inbox,
struct mlx4_cmd_mailbox *outbox)
{
int i;
int err;
for (i = 0; i < dev->caps.pkey_table_len[port]; i += 32) {
err = query_pkey_block(dev, port, i, table + i, inbox, outbox);
if (err)
return err;
}
return 0;
}
#define PORT_CAPABILITY_LOCATION_IN_SMP 20
#define PORT_STATE_OFFSET 32
static enum ib_port_state vf_port_state(struct mlx4_dev *dev, int port, int vf)
{
if (mlx4_get_slave_port_state(dev, vf, port) == SLAVE_PORT_UP)
return IB_PORT_ACTIVE;
else
return IB_PORT_DOWN;
}
static int mlx4_MAD_IFC_wrapper(struct mlx4_dev *dev, int slave,
struct mlx4_vhcr *vhcr,
struct mlx4_cmd_mailbox *inbox,
struct mlx4_cmd_mailbox *outbox,
struct mlx4_cmd_info *cmd)
{
struct ib_smp *smp = inbox->buf;
u32 index;
u8 port;
u16 *table;
int err;
int vidx, pidx;
struct mlx4_priv *priv = mlx4_priv(dev);
struct ib_smp *outsmp = outbox->buf;
__be16 *outtab = (__be16 *)(outsmp->data);
__be32 slave_cap_mask;
__be64 slave_node_guid;
port = vhcr->in_modifier;
if (smp->base_version == 1 &&
smp->mgmt_class == IB_MGMT_CLASS_SUBN_LID_ROUTED &&
smp->class_version == 1) {
if (smp->method == IB_MGMT_METHOD_GET) {
if (smp->attr_id == IB_SMP_ATTR_PKEY_TABLE) {
index = be32_to_cpu(smp->attr_mod);
if (port < 1 || port > dev->caps.num_ports)
return -EINVAL;
table = kcalloc(dev->caps.pkey_table_len[port], sizeof *table, GFP_KERNEL);
if (!table)
return -ENOMEM;
/* need to get the full pkey table because the paravirtualized
* pkeys may be scattered among several pkey blocks.
*/
err = get_full_pkey_table(dev, port, table, inbox, outbox);
if (!err) {
for (vidx = index * 32; vidx < (index + 1) * 32; ++vidx) {
pidx = priv->virt2phys_pkey[slave][port - 1][vidx];
outtab[vidx % 32] = cpu_to_be16(table[pidx]);
}
}
kfree(table);
return err;
}
if (smp->attr_id == IB_SMP_ATTR_PORT_INFO) {
/*get the slave specific caps:*/
/*do the command */
err = mlx4_cmd_box(dev, inbox->dma, outbox->dma,
vhcr->in_modifier, vhcr->op_modifier,
vhcr->op, MLX4_CMD_TIME_CLASS_C, MLX4_CMD_NATIVE);
/* modify the response for slaves */
if (!err && slave != mlx4_master_func_num(dev)) {
u8 *state = outsmp->data + PORT_STATE_OFFSET;
*state = (*state & 0xf0) | vf_port_state(dev, port, slave);
slave_cap_mask = priv->mfunc.master.slave_state[slave].ib_cap_mask[port];
memcpy(outsmp->data + PORT_CAPABILITY_LOCATION_IN_SMP, &slave_cap_mask, 4);
}
return err;
}
if (smp->attr_id == IB_SMP_ATTR_GUID_INFO) {
/* compute slave's gid block */
smp->attr_mod = cpu_to_be32(slave / 8);
/* execute cmd */
err = mlx4_cmd_box(dev, inbox->dma, outbox->dma,
vhcr->in_modifier, vhcr->op_modifier,
vhcr->op, MLX4_CMD_TIME_CLASS_C, MLX4_CMD_NATIVE);
if (!err) {
/* if needed, move slave gid to index 0 */
if (slave % 8)
memcpy(outsmp->data,
outsmp->data + (slave % 8) * 8, 8);
/* delete all other gids */
memset(outsmp->data + 8, 0, 56);
}
return err;
}
if (smp->attr_id == IB_SMP_ATTR_NODE_INFO) {
err = mlx4_cmd_box(dev, inbox->dma, outbox->dma,
vhcr->in_modifier, vhcr->op_modifier,
vhcr->op, MLX4_CMD_TIME_CLASS_C, MLX4_CMD_NATIVE);
if (!err) {
slave_node_guid = mlx4_get_slave_node_guid(dev, slave);
memcpy(outsmp->data + 12, &slave_node_guid, 8);
}
return err;
}
}
}
if (slave != mlx4_master_func_num(dev) &&
((smp->mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) ||
(smp->mgmt_class == IB_MGMT_CLASS_SUBN_LID_ROUTED &&
smp->method == IB_MGMT_METHOD_SET))) {
mlx4_err(dev, "slave %d is trying to execute a Subnet MGMT MAD, "
"class 0x%x, method 0x%x for attr 0x%x. Rejecting\n",
slave, smp->method, smp->mgmt_class,
be16_to_cpu(smp->attr_id));
return -EPERM;
}
/*default:*/
return mlx4_cmd_box(dev, inbox->dma, outbox->dma,
vhcr->in_modifier, vhcr->op_modifier,
vhcr->op, MLX4_CMD_TIME_CLASS_C, MLX4_CMD_NATIVE);
}
static int MLX4_CMD_DIAG_RPRT_wrapper(struct mlx4_dev *dev, int slave,
struct mlx4_vhcr *vhcr,
struct mlx4_cmd_mailbox *inbox,
struct mlx4_cmd_mailbox *outbox,
struct mlx4_cmd_info *cmd)
{
return -EPERM;
}
static int MLX4_CMD_UPDATE_QP_wrapper(struct mlx4_dev *dev, int slave,
struct mlx4_vhcr *vhcr,
struct mlx4_cmd_mailbox *inbox,
struct mlx4_cmd_mailbox *outbox,
struct mlx4_cmd_info *cmd)
{
return -EPERM;
}
int mlx4_DMA_wrapper(struct mlx4_dev *dev, int slave,
struct mlx4_vhcr *vhcr,
struct mlx4_cmd_mailbox *inbox,
struct mlx4_cmd_mailbox *outbox,
struct mlx4_cmd_info *cmd)
{
u64 in_param;
u64 out_param;
int err;
in_param = cmd->has_inbox ? (u64) inbox->dma : vhcr->in_param;
out_param = cmd->has_outbox ? (u64) outbox->dma : vhcr->out_param;
if (cmd->encode_slave_id) {
in_param &= 0xffffffffffffff00ll;
in_param |= slave;
}
err = __mlx4_cmd(dev, in_param, &out_param, cmd->out_is_imm,
vhcr->in_modifier, vhcr->op_modifier, vhcr->op,
MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE);
if (cmd->out_is_imm)
vhcr->out_param = out_param;
return err;
}
static struct mlx4_cmd_info cmd_info[] = {
{
.opcode = MLX4_CMD_QUERY_FW,
.has_inbox = false,
.has_outbox = true,
.out_is_imm = false,
.encode_slave_id = false,
.verify = NULL,
.wrapper = mlx4_QUERY_FW_wrapper
},
{
.opcode = MLX4_CMD_QUERY_HCA,
.has_inbox = false,
.has_outbox = true,
.out_is_imm = false,
.encode_slave_id = false,
.verify = NULL,
.wrapper = NULL
},
{
.opcode = MLX4_CMD_QUERY_DEV_CAP,
.has_inbox = false,
.has_outbox = true,
.out_is_imm = false,
.encode_slave_id = false,
.verify = NULL,
.wrapper = mlx4_QUERY_DEV_CAP_wrapper
},
{
.opcode = MLX4_CMD_QUERY_FUNC_CAP,
.has_inbox = false,
.has_outbox = true,
.out_is_imm = false,
.encode_slave_id = false,
.verify = NULL,
.wrapper = mlx4_QUERY_FUNC_CAP_wrapper
},
{
.opcode = MLX4_CMD_QUERY_ADAPTER,
.has_inbox = false,
.has_outbox = true,
.out_is_imm = false,
.encode_slave_id = false,
.verify = NULL,
.wrapper = NULL
},
{
.opcode = MLX4_CMD_INIT_PORT,
.has_inbox = false,
.has_outbox = false,
.out_is_imm = false,
.encode_slave_id = false,
.verify = NULL,
.wrapper = mlx4_INIT_PORT_wrapper
},
{
.opcode = MLX4_CMD_CLOSE_PORT,
.has_inbox = false,
.has_outbox = false,
.out_is_imm = false,
.encode_slave_id = false,
.verify = NULL,
.wrapper = mlx4_CLOSE_PORT_wrapper
},
{
.opcode = MLX4_CMD_QUERY_PORT,
.has_inbox = false,
.has_outbox = true,
.out_is_imm = false,
.encode_slave_id = false,
.verify = NULL,
.wrapper = mlx4_QUERY_PORT_wrapper
},
{
.opcode = MLX4_CMD_SET_PORT,
.has_inbox = true,
.has_outbox = false,
.out_is_imm = false,
.encode_slave_id = false,
.verify = NULL,
.wrapper = mlx4_SET_PORT_wrapper
},
{
.opcode = MLX4_CMD_MAP_EQ,
.has_inbox = false,
.has_outbox = false,
.out_is_imm = false,
.encode_slave_id = false,
.verify = NULL,
.wrapper = mlx4_MAP_EQ_wrapper
},
{
.opcode = MLX4_CMD_SW2HW_EQ,
.has_inbox = true,
.has_outbox = false,
.out_is_imm = false,
.encode_slave_id = true,
.verify = NULL,
.wrapper = mlx4_SW2HW_EQ_wrapper
},
{
.opcode = MLX4_CMD_HW_HEALTH_CHECK,
.has_inbox = false,
.has_outbox = false,
.out_is_imm = false,
.encode_slave_id = false,
.verify = NULL,
.wrapper = NULL
},
{
.opcode = MLX4_CMD_DIAG_RPRT,
.has_inbox = false,
.has_outbox = false,
.out_is_imm = false,
.encode_slave_id = false,
.skip_err_print = true,
.verify = NULL,
.wrapper = MLX4_CMD_DIAG_RPRT_wrapper
},
{
.opcode = MLX4_CMD_NOP,
.has_inbox = false,
.has_outbox = false,
.out_is_imm = false,
.encode_slave_id = false,
.verify = NULL,
.wrapper = NULL
},
{
.opcode = MLX4_CMD_ALLOC_RES,
.has_inbox = false,
.has_outbox = false,
.out_is_imm = true,
.encode_slave_id = false,
.verify = NULL,
.wrapper = mlx4_ALLOC_RES_wrapper
},
{
.opcode = MLX4_CMD_FREE_RES,
.has_inbox = false,
.has_outbox = false,
.out_is_imm = false,
.encode_slave_id = false,
.verify = NULL,
.wrapper = mlx4_FREE_RES_wrapper
},
{
.opcode = MLX4_CMD_SW2HW_MPT,
.has_inbox = true,
.has_outbox = false,
.out_is_imm = false,
.encode_slave_id = true,
.verify = NULL,
.wrapper = mlx4_SW2HW_MPT_wrapper
},
{
.opcode = MLX4_CMD_QUERY_MPT,
.has_inbox = false,
.has_outbox = true,
.out_is_imm = false,
.encode_slave_id = false,
.verify = NULL,
.wrapper = mlx4_QUERY_MPT_wrapper
},
{
.opcode = MLX4_CMD_HW2SW_MPT,
.has_inbox = false,
.has_outbox = false,
.out_is_imm = false,
.encode_slave_id = false,
.verify = NULL,
.wrapper = mlx4_HW2SW_MPT_wrapper
},
{
.opcode = MLX4_CMD_READ_MTT,
.has_inbox = false,
.has_outbox = true,
.out_is_imm = false,
.encode_slave_id = false,
.verify = NULL,
.wrapper = NULL
},
{
.opcode = MLX4_CMD_WRITE_MTT,
.has_inbox = true,
.has_outbox = false,
.out_is_imm = false,
.encode_slave_id = false,
.verify = NULL,
.wrapper = mlx4_WRITE_MTT_wrapper
},
{
.opcode = MLX4_CMD_SYNC_TPT,
.has_inbox = true,
.has_outbox = false,
.out_is_imm = false,
.encode_slave_id = false,
.verify = NULL,
.wrapper = NULL
},
{
.opcode = MLX4_CMD_HW2SW_EQ,
.has_inbox = false,
.has_outbox = true,
.out_is_imm = false,
.encode_slave_id = true,
.verify = NULL,
.wrapper = mlx4_HW2SW_EQ_wrapper
},
{
.opcode = MLX4_CMD_QUERY_EQ,
.has_inbox = false,
.has_outbox = true,
.out_is_imm = false,
.encode_slave_id = true,
.verify = NULL,
.wrapper = mlx4_QUERY_EQ_wrapper
},
{
.opcode = MLX4_CMD_SW2HW_CQ,
.has_inbox = true,
.has_outbox = false,
.out_is_imm = false,
.encode_slave_id = true,
.verify = NULL,
.wrapper = mlx4_SW2HW_CQ_wrapper
},
{
.opcode = MLX4_CMD_HW2SW_CQ,
.has_inbox = false,
.has_outbox = false,
.out_is_imm = false,
.encode_slave_id = false,
.verify = NULL,
.wrapper = mlx4_HW2SW_CQ_wrapper
},
{
.opcode = MLX4_CMD_QUERY_CQ,
.has_inbox = false,
.has_outbox = true,
.out_is_imm = false,
.encode_slave_id = false,
.verify = NULL,
.wrapper = mlx4_QUERY_CQ_wrapper
},
{
.opcode = MLX4_CMD_MODIFY_CQ,
.has_inbox = true,
.has_outbox = false,
.out_is_imm = true,
.encode_slave_id = false,
.verify = NULL,
.wrapper = mlx4_MODIFY_CQ_wrapper
},
{
.opcode = MLX4_CMD_SW2HW_SRQ,
.has_inbox = true,
.has_outbox = false,
.out_is_imm = false,
.encode_slave_id = true,
.verify = NULL,
.wrapper = mlx4_SW2HW_SRQ_wrapper
},
{
.opcode = MLX4_CMD_HW2SW_SRQ,
.has_inbox = false,
.has_outbox = false,
.out_is_imm = false,
.encode_slave_id = false,
.verify = NULL,
.wrapper = mlx4_HW2SW_SRQ_wrapper
},
{
.opcode = MLX4_CMD_QUERY_SRQ,
.has_inbox = false,
.has_outbox = true,
.out_is_imm = false,
.encode_slave_id = false,
.verify = NULL,
.wrapper = mlx4_QUERY_SRQ_wrapper
},
{
.opcode = MLX4_CMD_ARM_SRQ,
.has_inbox = false,
.has_outbox = false,
.out_is_imm = false,
.encode_slave_id = false,
.verify = NULL,
.wrapper = mlx4_ARM_SRQ_wrapper
},
{
.opcode = MLX4_CMD_RST2INIT_QP,
.has_inbox = true,
.has_outbox = false,
.out_is_imm = false,
.encode_slave_id = true,
.verify = NULL,
.wrapper = mlx4_RST2INIT_QP_wrapper
},
{
.opcode = MLX4_CMD_INIT2INIT_QP,
.has_inbox = true,
.has_outbox = false,
.out_is_imm = false,
.encode_slave_id = false,
.verify = NULL,
.wrapper = mlx4_INIT2INIT_QP_wrapper
},
{
.opcode = MLX4_CMD_INIT2RTR_QP,
.has_inbox = true,
.has_outbox = false,
.out_is_imm = false,
.encode_slave_id = false,
.verify = NULL,
.wrapper = mlx4_INIT2RTR_QP_wrapper
},
{
.opcode = MLX4_CMD_RTR2RTS_QP,
.has_inbox = true,
.has_outbox = false,
.out_is_imm = false,
.encode_slave_id = false,
.verify = NULL,
.wrapper = mlx4_RTR2RTS_QP_wrapper
},
{
.opcode = MLX4_CMD_RTS2RTS_QP,
.has_inbox = true,
.has_outbox = false,
.out_is_imm = false,
.encode_slave_id = false,
.verify = NULL,
.wrapper = mlx4_RTS2RTS_QP_wrapper
},
{
.opcode = MLX4_CMD_SQERR2RTS_QP,
.has_inbox = true,
.has_outbox = false,
.out_is_imm = false,
.encode_slave_id = false,
.verify = NULL,
.wrapper = mlx4_SQERR2RTS_QP_wrapper
},
{
.opcode = MLX4_CMD_2ERR_QP,
.has_inbox = false,
.has_outbox = false,
.out_is_imm = false,
.encode_slave_id = false,
.verify = NULL,
.wrapper = mlx4_GEN_QP_wrapper
},
{
.opcode = MLX4_CMD_RTS2SQD_QP,
.has_inbox = false,
.has_outbox = false,
.out_is_imm = false,
.encode_slave_id = false,
.verify = NULL,
.wrapper = mlx4_GEN_QP_wrapper
},
{
.opcode = MLX4_CMD_SQD2SQD_QP,
.has_inbox = true,
.has_outbox = false,
.out_is_imm = false,
.encode_slave_id = false,
.verify = NULL,
.wrapper = mlx4_SQD2SQD_QP_wrapper
},
{
.opcode = MLX4_CMD_SQD2RTS_QP,
.has_inbox = true,
.has_outbox = false,
.out_is_imm = false,
.encode_slave_id = false,
.verify = NULL,
.wrapper = mlx4_SQD2RTS_QP_wrapper
},
{
.opcode = MLX4_CMD_2RST_QP,
.has_inbox = false,
.has_outbox = false,
.out_is_imm = false,
.encode_slave_id = false,
.verify = NULL,
.wrapper = mlx4_2RST_QP_wrapper
},
{
.opcode = MLX4_CMD_QUERY_QP,
.has_inbox = false,
.has_outbox = true,
.out_is_imm = false,
.encode_slave_id = false,
.verify = NULL,
.wrapper = mlx4_GEN_QP_wrapper
},
{
.opcode = MLX4_CMD_SUSPEND_QP,
.has_inbox = false,
.has_outbox = false,
.out_is_imm = false,
.encode_slave_id = false,
.verify = NULL,
.wrapper = mlx4_GEN_QP_wrapper
},
{
.opcode = MLX4_CMD_UNSUSPEND_QP,
.has_inbox = false,
.has_outbox = false,
.out_is_imm = false,
.encode_slave_id = false,
.verify = NULL,
.wrapper = mlx4_GEN_QP_wrapper
},
{
.opcode = MLX4_CMD_UPDATE_QP,
.has_inbox = false,
.has_outbox = false,
.out_is_imm = false,
.encode_slave_id = false,
.skip_err_print = true,
.verify = NULL,
.wrapper = MLX4_CMD_UPDATE_QP_wrapper
},
{
.opcode = MLX4_CMD_CONF_SPECIAL_QP,
.has_inbox = false,
.has_outbox = false,
.out_is_imm = false,
.encode_slave_id = false,
.verify = NULL, /* XXX verify: only demux can do this */
.wrapper = NULL
},
{
.opcode = MLX4_CMD_MAD_IFC,
.has_inbox = true,
.has_outbox = true,
.out_is_imm = false,
.encode_slave_id = false,
.verify = NULL,
.wrapper = mlx4_MAD_IFC_wrapper
},
{
.opcode = MLX4_CMD_QUERY_IF_STAT,
.has_inbox = false,
.has_outbox = true,
.out_is_imm = false,
.encode_slave_id = false,
.verify = NULL,
.wrapper = mlx4_QUERY_IF_STAT_wrapper
},
/* Native multicast commands are not available for guests */
{
.opcode = MLX4_CMD_QP_ATTACH,
.has_inbox = true,
.has_outbox = false,
.out_is_imm = false,
.encode_slave_id = false,
.verify = NULL,
.wrapper = mlx4_QP_ATTACH_wrapper
},
{
.opcode = MLX4_CMD_PROMISC,
.has_inbox = false,
.has_outbox = false,
.out_is_imm = false,
.encode_slave_id = false,
.verify = NULL,
.wrapper = mlx4_PROMISC_wrapper
},
/* Ethernet specific commands */
{
.opcode = MLX4_CMD_SET_VLAN_FLTR,
.has_inbox = true,
.has_outbox = false,
.out_is_imm = false,
.encode_slave_id = false,
.verify = NULL,
.wrapper = mlx4_SET_VLAN_FLTR_wrapper
},
{
.opcode = MLX4_CMD_SET_MCAST_FLTR,
.has_inbox = false,
.has_outbox = false,
.out_is_imm = false,
.encode_slave_id = false,
.verify = NULL,
.wrapper = mlx4_SET_MCAST_FLTR_wrapper
},
{
.opcode = MLX4_CMD_DUMP_ETH_STATS,
.has_inbox = false,
.has_outbox = true,
.out_is_imm = false,
.encode_slave_id = false,
.verify = NULL,
.wrapper = mlx4_DUMP_ETH_STATS_wrapper
},
{
.opcode = MLX4_CMD_INFORM_FLR_DONE,
.has_inbox = false,
.has_outbox = false,
.out_is_imm = false,
.encode_slave_id = false,
.verify = NULL,
.wrapper = NULL
},
/* flow steering commands */
{
.opcode = MLX4_QP_FLOW_STEERING_ATTACH,
.has_inbox = true,
.has_outbox = false,
.out_is_imm = true,
.encode_slave_id = false,
.verify = NULL,
.wrapper = mlx4_QP_FLOW_STEERING_ATTACH_wrapper
},
{
.opcode = MLX4_QP_FLOW_STEERING_DETACH,
.has_inbox = false,
.has_outbox = false,
.out_is_imm = false,
.encode_slave_id = false,
.verify = NULL,
.wrapper = mlx4_QP_FLOW_STEERING_DETACH_wrapper
},
/* wol commands */
{
.opcode = MLX4_CMD_MOD_STAT_CFG,
.has_inbox = false,
.has_outbox = false,
.out_is_imm = false,
.encode_slave_id = false,
.skip_err_print = true,
.verify = NULL,
.wrapper = mlx4_MOD_STAT_CFG_wrapper
},
};
static int mlx4_master_process_vhcr(struct mlx4_dev *dev, int slave,
struct mlx4_vhcr_cmd *in_vhcr)
{
struct mlx4_priv *priv = mlx4_priv(dev);
struct mlx4_cmd_info *cmd = NULL;
struct mlx4_vhcr_cmd *vhcr_cmd = in_vhcr ? in_vhcr : priv->mfunc.vhcr;
struct mlx4_vhcr *vhcr;
struct mlx4_cmd_mailbox *inbox = NULL;
struct mlx4_cmd_mailbox *outbox = NULL;
u64 in_param;
u64 out_param;
int ret = 0;
int i;
int err = 0;
/* Create sw representation of Virtual HCR */
vhcr = kzalloc(sizeof(struct mlx4_vhcr), GFP_KERNEL);
if (!vhcr)
return -ENOMEM;
/* DMA in the vHCR */
if (!in_vhcr) {
ret = mlx4_ACCESS_MEM(dev, priv->mfunc.vhcr_dma, slave,
priv->mfunc.master.slave_state[slave].vhcr_dma,
ALIGN(sizeof(struct mlx4_vhcr_cmd),
MLX4_ACCESS_MEM_ALIGN), 1);
if (ret) {
mlx4_err(dev, "%s:Failed reading vhcr"
"ret: 0x%x\n", __func__, ret);
kfree(vhcr);
return ret;
}
}
/* Fill SW VHCR fields */
vhcr->in_param = be64_to_cpu(vhcr_cmd->in_param);
vhcr->out_param = be64_to_cpu(vhcr_cmd->out_param);
vhcr->in_modifier = be32_to_cpu(vhcr_cmd->in_modifier);
vhcr->token = be16_to_cpu(vhcr_cmd->token);
vhcr->op = be16_to_cpu(vhcr_cmd->opcode) & 0xfff;
vhcr->op_modifier = (u8) (be16_to_cpu(vhcr_cmd->opcode) >> 12);
vhcr->e_bit = vhcr_cmd->flags & (1 << 6);
/* Lookup command */
for (i = 0; i < ARRAY_SIZE(cmd_info); ++i) {
if (vhcr->op == cmd_info[i].opcode) {
cmd = &cmd_info[i];
break;
}
}
if (!cmd) {
mlx4_err(dev, "unparavirt command: %s (0x%x) accepted from slave:%d\n",
cmd_to_str(vhcr->op), vhcr->op, slave);
vhcr_cmd->status = CMD_STAT_BAD_PARAM;
goto out_status;
}
/* Read inbox */
if (cmd->has_inbox) {
vhcr->in_param &= INBOX_MASK;
inbox = mlx4_alloc_cmd_mailbox(dev);
if (IS_ERR(inbox)) {
vhcr_cmd->status = CMD_STAT_BAD_SIZE;
inbox = NULL;
goto out_status;
}
if (mlx4_ACCESS_MEM(dev, inbox->dma, slave,
vhcr->in_param,
MLX4_MAILBOX_SIZE, 1)) {
mlx4_err(dev, "%s: Failed reading inbox for cmd %s (0x%x)\n",
__func__, cmd_to_str(cmd->opcode), cmd->opcode);
vhcr_cmd->status = CMD_STAT_INTERNAL_ERR;
goto out_status;
}
}
/* Apply permission and bound checks if applicable */
if (cmd->verify && cmd->verify(dev, slave, vhcr, inbox)) {
mlx4_warn(dev, "Command %s (0x%x) from slave: %d failed protection "
"checks for resource_id: %d\n", cmd_to_str(vhcr->op),
vhcr->op, slave, vhcr->in_modifier);
vhcr_cmd->status = CMD_STAT_BAD_OP;
goto out_status;
}
/* Allocate outbox */
if (cmd->has_outbox) {
outbox = mlx4_alloc_cmd_mailbox(dev);
if (IS_ERR(outbox)) {
vhcr_cmd->status = CMD_STAT_BAD_SIZE;
outbox = NULL;
goto out_status;
}
}
/* Execute the command! */
if (cmd->wrapper) {
err = cmd->wrapper(dev, slave, vhcr, inbox, outbox,
cmd);
if (cmd->out_is_imm)
vhcr_cmd->out_param = cpu_to_be64(vhcr->out_param);
} else {
in_param = cmd->has_inbox ? (u64) inbox->dma :
vhcr->in_param;
out_param = cmd->has_outbox ? (u64) outbox->dma :
vhcr->out_param;
err = __mlx4_cmd(dev, in_param, &out_param,
cmd->out_is_imm, vhcr->in_modifier,
vhcr->op_modifier, vhcr->op,
MLX4_CMD_TIME_CLASS_A,
MLX4_CMD_NATIVE);
if (cmd->out_is_imm) {
vhcr->out_param = out_param;
vhcr_cmd->out_param = cpu_to_be64(vhcr->out_param);
}
}
if (err) {
if (!cmd->skip_err_print)
mlx4_warn(dev, "vhcr command %s (0x%x) slave:%d "
"in_param 0x%llx in_mod=0x%x, op_mod=0x%x "
"failed with error:%d, status %d\n",
cmd_to_str(vhcr->op), vhcr->op, slave,
(unsigned long long) vhcr->in_param, vhcr->in_modifier,
vhcr->op_modifier, vhcr->errno, err);
vhcr_cmd->status = mlx4_errno_to_status(err);
goto out_status;
}
/* Write outbox if command completed successfully */
if (cmd->has_outbox && !vhcr_cmd->status) {
ret = mlx4_ACCESS_MEM(dev, outbox->dma, slave,
vhcr->out_param,
MLX4_MAILBOX_SIZE, MLX4_CMD_WRAPPED);
if (ret) {
/* If we failed to write back the outbox after the
*command was successfully executed, we must fail this
* slave, as it is now in undefined state */
mlx4_err(dev, "%s: Failed writing outbox\n", __func__);
goto out;
}
}
out_status:
/* DMA back vhcr result */
if (!in_vhcr) {
ret = mlx4_ACCESS_MEM(dev, priv->mfunc.vhcr_dma, slave,
priv->mfunc.master.slave_state[slave].vhcr_dma,
ALIGN(sizeof(struct mlx4_vhcr),
MLX4_ACCESS_MEM_ALIGN),
MLX4_CMD_WRAPPED);
if (ret)
mlx4_err(dev, "%s:Failed writing vhcr result\n",
__func__);
else if (vhcr->e_bit &&
mlx4_GEN_EQE(dev, slave, &priv->mfunc.master.cmd_eqe))
mlx4_warn(dev, "Failed to generate command completion "
"eqe for slave %d\n", slave);
}
out:
kfree(vhcr);
mlx4_free_cmd_mailbox(dev, inbox);
mlx4_free_cmd_mailbox(dev, outbox);
return ret;
}
static int mlx4_master_immediate_activate_vlan_qos(struct mlx4_priv *priv,
int slave, int port)
{
struct mlx4_vport_oper_state *vp_oper;
struct mlx4_vport_state *vp_admin;
struct mlx4_vf_immed_vlan_work *work;
int err;
int admin_vlan_ix = NO_INDX;
vp_oper = &priv->mfunc.master.vf_oper[slave].vport[port];
vp_admin = &priv->mfunc.master.vf_admin[slave].vport[port];
if (vp_oper->state.default_vlan == vp_admin->default_vlan &&
vp_oper->state.default_qos == vp_admin->default_qos)
return 0;
work = kzalloc(sizeof(*work), GFP_KERNEL);
if (!work)
return -ENOMEM;
if (vp_oper->state.default_vlan != vp_admin->default_vlan) {
if (MLX4_VGT != vp_admin->default_vlan) {
err = __mlx4_register_vlan(&priv->dev, port,
vp_admin->default_vlan,
&admin_vlan_ix);
if (err) {
mlx4_warn((&priv->dev),
"No vlan resources slave %d, port %d\n",
slave, port);
return err;
}
} else {
admin_vlan_ix = NO_INDX;
}
work->flags |= MLX4_VF_IMMED_VLAN_FLAG_VLAN;
mlx4_dbg((&(priv->dev)),
"alloc vlan %d idx %d slave %d port %d\n",
(int)(vp_admin->default_vlan),
admin_vlan_ix, slave, port);
}
/* save original vlan ix and vlan id */
work->orig_vlan_id = vp_oper->state.default_vlan;
work->orig_vlan_ix = vp_oper->vlan_idx;
/* handle new qos */
if (vp_oper->state.default_qos != vp_admin->default_qos)
work->flags |= MLX4_VF_IMMED_VLAN_FLAG_QOS;
if (work->flags & MLX4_VF_IMMED_VLAN_FLAG_VLAN)
vp_oper->vlan_idx = admin_vlan_ix;
vp_oper->state.default_vlan = vp_admin->default_vlan;
vp_oper->state.default_qos = vp_admin->default_qos;
/* iterate over QPs owned by this slave, using UPDATE_QP */
work->port = port;
work->slave = slave;
work->qos = vp_oper->state.default_qos;
work->vlan_id = vp_oper->state.default_vlan;
work->vlan_ix = vp_oper->vlan_idx;
work->priv = priv;
INIT_WORK(&work->work, mlx4_vf_immed_vlan_work_handler);
queue_work(priv->mfunc.master.comm_wq, &work->work);
return 0;
}
static int mlx4_master_activate_admin_state(struct mlx4_priv *priv, int slave)
{
int port, err;
struct mlx4_vport_state *vp_admin;
struct mlx4_vport_oper_state *vp_oper;
for (port = 1; port <= MLX4_MAX_PORTS; port++) {
vp_oper = &priv->mfunc.master.vf_oper[slave].vport[port];
vp_admin = &priv->mfunc.master.vf_admin[slave].vport[port];
vp_oper->state = *vp_admin;
if (MLX4_VGT != vp_admin->default_vlan) {
err = __mlx4_register_vlan(&priv->dev, port,
vp_admin->default_vlan, &(vp_oper->vlan_idx));
if (err) {
vp_oper->vlan_idx = NO_INDX;
mlx4_warn((&priv->dev),
"No vlan resorces slave %d, port %d\n",
slave, port);
return err;
}
mlx4_dbg((&(priv->dev)), "alloc vlan %d idx %d slave %d port %d\n",
(int)(vp_oper->state.default_vlan),
vp_oper->vlan_idx, slave, port);
}
if (vp_admin->spoofchk) {
vp_oper->mac_idx = __mlx4_register_mac(&priv->dev,
port,
vp_admin->mac);
if (0 > vp_oper->mac_idx) {
err = vp_oper->mac_idx;
vp_oper->mac_idx = NO_INDX;
mlx4_warn((&priv->dev),
"No mac resources slave %d, port %d\n",
slave, port);
return err;
}
mlx4_dbg((&(priv->dev)), "alloc mac %llx idx %d slave %d port %d\n",
(unsigned long long) vp_oper->state.mac, vp_oper->mac_idx, slave, port);
}
}
return 0;
}
static void mlx4_master_deactivate_admin_state(struct mlx4_priv *priv, int slave)
{
int port;
struct mlx4_vport_oper_state *vp_oper;
for (port = 1; port <= MLX4_MAX_PORTS; port++) {
vp_oper = &priv->mfunc.master.vf_oper[slave].vport[port];
if (NO_INDX != vp_oper->vlan_idx) {
__mlx4_unregister_vlan(&priv->dev,
port, vp_oper->state.default_vlan);
vp_oper->vlan_idx = NO_INDX;
}
if (NO_INDX != vp_oper->mac_idx) {
__mlx4_unregister_mac(&priv->dev, port, vp_oper->state.mac);
vp_oper->mac_idx = NO_INDX;
}
}
return;
}
static void mlx4_master_do_cmd(struct mlx4_dev *dev, int slave, u8 cmd,
u16 param, u8 toggle)
{
struct mlx4_priv *priv = mlx4_priv(dev);
struct mlx4_slave_state *slave_state = priv->mfunc.master.slave_state;
u32 reply;
u8 is_going_down = 0;
int i;
unsigned long flags;
slave_state[slave].comm_toggle ^= 1;
reply = (u32) slave_state[slave].comm_toggle << 31;
if (toggle != slave_state[slave].comm_toggle) {
mlx4_warn(dev, "Incorrect toggle %d from slave %d. *** MASTER"
"STATE COMPROMISIED ***\n", toggle, slave);
goto reset_slave;
}
if (cmd == MLX4_COMM_CMD_RESET) {
mlx4_warn(dev, "Received reset from slave:%d\n", slave);
slave_state[slave].active = false;
slave_state[slave].old_vlan_api = false;
mlx4_master_deactivate_admin_state(priv, slave);
for (i = 0; i < MLX4_EVENT_TYPES_NUM; ++i) {
slave_state[slave].event_eq[i].eqn = -1;
slave_state[slave].event_eq[i].token = 0;
}
/*check if we are in the middle of FLR process,
if so return "retry" status to the slave*/
if (MLX4_COMM_CMD_FLR == slave_state[slave].last_cmd)
goto inform_slave_state;
mlx4_dispatch_event(dev, MLX4_DEV_EVENT_SLAVE_SHUTDOWN, slave);
/* write the version in the event field */
reply |= mlx4_comm_get_version();
goto reset_slave;
}
/*command from slave in the middle of FLR*/
if (cmd != MLX4_COMM_CMD_RESET &&
MLX4_COMM_CMD_FLR == slave_state[slave].last_cmd) {
mlx4_warn(dev, "slave:%d is Trying to run cmd (0x%x) "
"in the middle of FLR\n", slave, cmd);
return;
}
switch (cmd) {
case MLX4_COMM_CMD_VHCR0:
if (slave_state[slave].last_cmd != MLX4_COMM_CMD_RESET)
goto reset_slave;
slave_state[slave].vhcr_dma = ((u64) param) << 48;
priv->mfunc.master.slave_state[slave].cookie = 0;
break;
case MLX4_COMM_CMD_VHCR1:
if (slave_state[slave].last_cmd != MLX4_COMM_CMD_VHCR0)
goto reset_slave;
slave_state[slave].vhcr_dma |= ((u64) param) << 32;
break;
case MLX4_COMM_CMD_VHCR2:
if (slave_state[slave].last_cmd != MLX4_COMM_CMD_VHCR1)
goto reset_slave;
slave_state[slave].vhcr_dma |= ((u64) param) << 16;
break;
case MLX4_COMM_CMD_VHCR_EN:
if (slave_state[slave].last_cmd != MLX4_COMM_CMD_VHCR2)
goto reset_slave;
slave_state[slave].vhcr_dma |= param;
if (mlx4_master_activate_admin_state(priv, slave))
goto reset_slave;
slave_state[slave].active = true;
mlx4_dispatch_event(dev, MLX4_DEV_EVENT_SLAVE_INIT, slave);
break;
case MLX4_COMM_CMD_VHCR_POST:
if ((slave_state[slave].last_cmd != MLX4_COMM_CMD_VHCR_EN) &&
(slave_state[slave].last_cmd != MLX4_COMM_CMD_VHCR_POST))
goto reset_slave;
mutex_lock(&priv->cmd.slave_cmd_mutex);
if (mlx4_master_process_vhcr(dev, slave, NULL)) {
mlx4_err(dev, "Failed processing vhcr for slave: %d,"
" resetting slave.\n", slave);
mutex_unlock(&priv->cmd.slave_cmd_mutex);
goto reset_slave;
}
mutex_unlock(&priv->cmd.slave_cmd_mutex);
break;
default:
mlx4_warn(dev, "Bad comm cmd: %d from slave: %d\n", cmd, slave);
goto reset_slave;
}
spin_lock_irqsave(&priv->mfunc.master.slave_state_lock, flags);
if (!slave_state[slave].is_slave_going_down)
slave_state[slave].last_cmd = cmd;
else
is_going_down = 1;
spin_unlock_irqrestore(&priv->mfunc.master.slave_state_lock, flags);
if (is_going_down) {
mlx4_warn(dev, "Slave is going down aborting command (%d)"
" executing from slave: %d\n",
cmd, slave);
return;
}
__raw_writel((__force u32) cpu_to_be32(reply),
&priv->mfunc.comm[slave].slave_read);
mmiowb();
return;
reset_slave:
/* cleanup any slave resources */
mlx4_delete_all_resources_for_slave(dev, slave);
spin_lock_irqsave(&priv->mfunc.master.slave_state_lock, flags);
if (!slave_state[slave].is_slave_going_down)
slave_state[slave].last_cmd = MLX4_COMM_CMD_RESET;
spin_unlock_irqrestore(&priv->mfunc.master.slave_state_lock, flags);
/*with slave in the middle of flr, no need to clean resources again.*/
inform_slave_state:
__raw_writel((__force u32) cpu_to_be32(reply),
&priv->mfunc.comm[slave].slave_read);
wmb();
}
/* master command processing */
void mlx4_master_comm_channel(struct work_struct *work)
{
struct mlx4_mfunc_master_ctx *master =
container_of(work,
struct mlx4_mfunc_master_ctx,
comm_work);
struct mlx4_mfunc *mfunc =
container_of(master, struct mlx4_mfunc, master);
struct mlx4_priv *priv =
container_of(mfunc, struct mlx4_priv, mfunc);
struct mlx4_dev *dev = &priv->dev;
__be32 *bit_vec;
u32 comm_cmd;
u32 vec;
int i, j, slave;
int toggle;
int served = 0;
int reported = 0;
u32 slt;
bit_vec = master->comm_arm_bit_vector;
for (i = 0; i < COMM_CHANNEL_BIT_ARRAY_SIZE; i++) {
vec = be32_to_cpu(bit_vec[i]);
for (j = 0; j < 32; j++) {
if (!(vec & (1 << j)))
continue;
++reported;
slave = (i * 32) + j;
comm_cmd = swab32(readl(
&mfunc->comm[slave].slave_write));
slt = swab32(readl(&mfunc->comm[slave].slave_read))
>> 31;
toggle = comm_cmd >> 31;
if (toggle != slt) {
if (master->slave_state[slave].comm_toggle
!= slt) {
mlx4_info(dev, "slave %d out of sync."
" read toggle %d, state toggle %d. "
"Resynching.\n", slave, slt,
master->slave_state[slave].comm_toggle);
master->slave_state[slave].comm_toggle =
slt;
}
mlx4_master_do_cmd(dev, slave,
comm_cmd >> 16 & 0xff,
comm_cmd & 0xffff, toggle);
++served;
} else
mlx4_err(dev, "slave %d out of sync."
" read toggle %d, write toggle %d.\n", slave, slt,
toggle);
}
}
if (reported && reported != served)
mlx4_warn(dev, "Got command event with bitmask from %d slaves"
" but %d were served\n",
reported, served);
}
/* master command processing */
void mlx4_master_arm_comm_channel(struct work_struct *work)
{
struct mlx4_mfunc_master_ctx *master =
container_of(work,
struct mlx4_mfunc_master_ctx,
arm_comm_work);
struct mlx4_mfunc *mfunc =
container_of(master, struct mlx4_mfunc, master);
struct mlx4_priv *priv =
container_of(mfunc, struct mlx4_priv, mfunc);
struct mlx4_dev *dev = &priv->dev;
if (mlx4_ARM_COMM_CHANNEL(dev))
mlx4_warn(dev, "Failed to arm comm channel events\n");
}
static int sync_toggles(struct mlx4_dev *dev)
{
struct mlx4_priv *priv = mlx4_priv(dev);
int wr_toggle;
int rd_toggle;
unsigned long end;
wr_toggle = swab32(readl(&priv->mfunc.comm->slave_write)) >> 31;
end = jiffies + msecs_to_jiffies(5000);
while (time_before(jiffies, end)) {
rd_toggle = swab32(readl(&priv->mfunc.comm->slave_read)) >> 31;
if (rd_toggle == wr_toggle) {
priv->cmd.comm_toggle = rd_toggle;
return 0;
}
cond_resched();
}
/*
* we could reach here if for example the previous VM using this
* function misbehaved and left the channel with unsynced state. We
* should fix this here and give this VM a chance to use a properly
* synced channel
*/
mlx4_warn(dev, "recovering from previously mis-behaved VM\n");
__raw_writel((__force u32) 0, &priv->mfunc.comm->slave_read);
__raw_writel((__force u32) 0, &priv->mfunc.comm->slave_write);
priv->cmd.comm_toggle = 0;
return 0;
}
int mlx4_multi_func_init(struct mlx4_dev *dev)
{
struct mlx4_priv *priv = mlx4_priv(dev);
struct mlx4_slave_state *s_state;
int i, j, err, port;
if (mlx4_is_master(dev))
priv->mfunc.comm =
ioremap(pci_resource_start(dev->pdev, priv->fw.comm_bar) +
priv->fw.comm_base, MLX4_COMM_PAGESIZE);
else
priv->mfunc.comm =
ioremap(pci_resource_start(dev->pdev, 2) +
MLX4_SLAVE_COMM_BASE, MLX4_COMM_PAGESIZE);
if (!priv->mfunc.comm) {
mlx4_err(dev, "Couldn't map communication vector.\n");
goto err_vhcr;
}
if (mlx4_is_master(dev)) {
priv->mfunc.master.slave_state =
kzalloc(dev->num_slaves *
sizeof(struct mlx4_slave_state), GFP_KERNEL);
if (!priv->mfunc.master.slave_state)
goto err_comm;
priv->mfunc.master.vf_admin =
kzalloc(dev->num_slaves *
sizeof(struct mlx4_vf_admin_state), GFP_KERNEL);
if (!priv->mfunc.master.vf_admin)
goto err_comm_admin;
priv->mfunc.master.vf_oper =
kzalloc(dev->num_slaves *
sizeof(struct mlx4_vf_oper_state), GFP_KERNEL);
if (!priv->mfunc.master.vf_oper)
goto err_comm_oper;
for (i = 0; i < dev->num_slaves; ++i) {
s_state = &priv->mfunc.master.slave_state[i];
s_state->last_cmd = MLX4_COMM_CMD_RESET;
mutex_init(&priv->mfunc.master.gen_eqe_mutex[i]);
for (j = 0; j < MLX4_EVENT_TYPES_NUM; ++j)
s_state->event_eq[j].eqn = -1;
__raw_writel((__force u32) 0,
&priv->mfunc.comm[i].slave_write);
__raw_writel((__force u32) 0,
&priv->mfunc.comm[i].slave_read);
mmiowb();
for (port = 1; port <= MLX4_MAX_PORTS; port++) {
s_state->vlan_filter[port] =
kzalloc(sizeof(struct mlx4_vlan_fltr),
GFP_KERNEL);
if (!s_state->vlan_filter[port]) {
if (--port)
kfree(s_state->vlan_filter[port]);
goto err_slaves;
}
INIT_LIST_HEAD(&s_state->mcast_filters[port]);
priv->mfunc.master.vf_admin[i].vport[port].default_vlan = MLX4_VGT;
priv->mfunc.master.vf_oper[i].vport[port].state.default_vlan = MLX4_VGT;
priv->mfunc.master.vf_oper[i].vport[port].vlan_idx = NO_INDX;
priv->mfunc.master.vf_oper[i].vport[port].mac_idx = NO_INDX;
}
spin_lock_init(&s_state->lock);
}
memset(&priv->mfunc.master.cmd_eqe, 0, dev->caps.eqe_size);
priv->mfunc.master.cmd_eqe.type = MLX4_EVENT_TYPE_CMD;
INIT_WORK(&priv->mfunc.master.comm_work,
mlx4_master_comm_channel);
INIT_WORK(&priv->mfunc.master.arm_comm_work,
mlx4_master_arm_comm_channel);
INIT_WORK(&priv->mfunc.master.slave_event_work,
mlx4_gen_slave_eqe);
INIT_WORK(&priv->mfunc.master.slave_flr_event_work,
mlx4_master_handle_slave_flr);
spin_lock_init(&priv->mfunc.master.slave_state_lock);
spin_lock_init(&priv->mfunc.master.slave_eq.event_lock);
priv->mfunc.master.comm_wq =
create_singlethread_workqueue("mlx4_comm");
if (!priv->mfunc.master.comm_wq)
goto err_slaves;
if (mlx4_init_resource_tracker(dev))
goto err_thread;
err = mlx4_ARM_COMM_CHANNEL(dev);
if (err) {
mlx4_err(dev, " Failed to arm comm channel eq: %x\n",
err);
goto err_resource;
}
} else {
err = sync_toggles(dev);
if (err) {
mlx4_err(dev, "Couldn't sync toggles\n");
goto err_comm;
}
}
return 0;
err_resource:
mlx4_free_resource_tracker(dev, RES_TR_FREE_ALL);
err_thread:
flush_workqueue(priv->mfunc.master.comm_wq);
destroy_workqueue(priv->mfunc.master.comm_wq);
err_slaves:
while (--i) {
for (port = 1; port <= MLX4_MAX_PORTS; port++)
kfree(priv->mfunc.master.slave_state[i].vlan_filter[port]);
}
kfree(priv->mfunc.master.vf_oper);
err_comm_oper:
kfree(priv->mfunc.master.vf_admin);
err_comm_admin:
kfree(priv->mfunc.master.slave_state);
err_comm:
iounmap(priv->mfunc.comm);
err_vhcr:
dma_free_coherent(&(dev->pdev->dev), PAGE_SIZE,
priv->mfunc.vhcr,
priv->mfunc.vhcr_dma);
priv->mfunc.vhcr = NULL;
return -ENOMEM;
}
int mlx4_cmd_init(struct mlx4_dev *dev)
{
struct mlx4_priv *priv = mlx4_priv(dev);
mutex_init(&priv->cmd.hcr_mutex);
mutex_init(&priv->cmd.slave_cmd_mutex);
sema_init(&priv->cmd.poll_sem, 1);
priv->cmd.use_events = 0;
priv->cmd.toggle = 1;
priv->cmd.hcr = NULL;
priv->mfunc.vhcr = NULL;
if (!mlx4_is_slave(dev)) {
priv->cmd.hcr = ioremap(pci_resource_start(dev->pdev, 0) +
MLX4_HCR_BASE, MLX4_HCR_SIZE);
if (!priv->cmd.hcr) {
mlx4_err(dev, "Couldn't map command register.\n");
return -ENOMEM;
}
}
if (mlx4_is_mfunc(dev)) {
priv->mfunc.vhcr = dma_alloc_coherent(&(dev->pdev->dev), PAGE_SIZE,
&priv->mfunc.vhcr_dma,
GFP_KERNEL);
if (!priv->mfunc.vhcr) {
mlx4_err(dev, "Couldn't allocate VHCR.\n");
goto err_hcr;
}
}
priv->cmd.pool = pci_pool_create("mlx4_cmd", dev->pdev,
MLX4_MAILBOX_SIZE,
MLX4_MAILBOX_SIZE, 0);
if (!priv->cmd.pool)
goto err_vhcr;
return 0;
err_vhcr:
if (mlx4_is_mfunc(dev))
dma_free_coherent(&(dev->pdev->dev), PAGE_SIZE,
priv->mfunc.vhcr, priv->mfunc.vhcr_dma);
priv->mfunc.vhcr = NULL;
err_hcr:
if (!mlx4_is_slave(dev))
iounmap(priv->cmd.hcr);
return -ENOMEM;
}
void mlx4_multi_func_cleanup(struct mlx4_dev *dev)
{
struct mlx4_priv *priv = mlx4_priv(dev);
int i, port;
if (mlx4_is_master(dev)) {
flush_workqueue(priv->mfunc.master.comm_wq);
destroy_workqueue(priv->mfunc.master.comm_wq);
for (i = 0; i < dev->num_slaves; i++) {
for (port = 1; port <= MLX4_MAX_PORTS; port++)
kfree(priv->mfunc.master.slave_state[i].vlan_filter[port]);
}
kfree(priv->mfunc.master.slave_state);
kfree(priv->mfunc.master.vf_admin);
kfree(priv->mfunc.master.vf_oper);
}
iounmap(priv->mfunc.comm);
}
void mlx4_cmd_cleanup(struct mlx4_dev *dev)
{
struct mlx4_priv *priv = mlx4_priv(dev);
pci_pool_destroy(priv->cmd.pool);
if (!mlx4_is_slave(dev))
iounmap(priv->cmd.hcr);
if (mlx4_is_mfunc(dev))
dma_free_coherent(&(dev->pdev->dev), PAGE_SIZE,
priv->mfunc.vhcr, priv->mfunc.vhcr_dma);
priv->mfunc.vhcr = NULL;
}
/*
* Switch to using events to issue FW commands (can only be called
* after event queue for command events has been initialized).
*/
int mlx4_cmd_use_events(struct mlx4_dev *dev)
{
struct mlx4_priv *priv = mlx4_priv(dev);
int i;
int err = 0;
priv->cmd.context = kmalloc(priv->cmd.max_cmds *
sizeof (struct mlx4_cmd_context),
GFP_KERNEL);
if (!priv->cmd.context)
return -ENOMEM;
for (i = 0; i < priv->cmd.max_cmds; ++i) {
priv->cmd.context[i].token = i;
priv->cmd.context[i].next = i + 1;
}
priv->cmd.context[priv->cmd.max_cmds - 1].next = -1;
priv->cmd.free_head = 0;
sema_init(&priv->cmd.event_sem, priv->cmd.max_cmds);
spin_lock_init(&priv->cmd.context_lock);
for (priv->cmd.token_mask = 1;
priv->cmd.token_mask < priv->cmd.max_cmds;
priv->cmd.token_mask <<= 1)
; /* nothing */
--priv->cmd.token_mask;
down(&priv->cmd.poll_sem);
priv->cmd.use_events = 1;
return err;
}
/*
* Switch back to polling (used when shutting down the device)
*/
void mlx4_cmd_use_polling(struct mlx4_dev *dev)
{
struct mlx4_priv *priv = mlx4_priv(dev);
int i;
priv->cmd.use_events = 0;
for (i = 0; i < priv->cmd.max_cmds; ++i)
down(&priv->cmd.event_sem);
kfree(priv->cmd.context);
up(&priv->cmd.poll_sem);
}
struct mlx4_cmd_mailbox *mlx4_alloc_cmd_mailbox(struct mlx4_dev *dev)
{
struct mlx4_cmd_mailbox *mailbox;
mailbox = kmalloc(sizeof *mailbox, GFP_KERNEL);
if (!mailbox)
return ERR_PTR(-ENOMEM);
mailbox->buf = pci_pool_alloc(mlx4_priv(dev)->cmd.pool, GFP_KERNEL,
&mailbox->dma);
if (!mailbox->buf) {
kfree(mailbox);
return ERR_PTR(-ENOMEM);
}
memset(mailbox->buf, 0, MLX4_MAILBOX_SIZE);
return mailbox;
}
EXPORT_SYMBOL_GPL(mlx4_alloc_cmd_mailbox);
void mlx4_free_cmd_mailbox(struct mlx4_dev *dev,
struct mlx4_cmd_mailbox *mailbox)
{
if (!mailbox)
return;
pci_pool_free(mlx4_priv(dev)->cmd.pool, mailbox->buf, mailbox->dma);
kfree(mailbox);
}
EXPORT_SYMBOL_GPL(mlx4_free_cmd_mailbox);
u32 mlx4_comm_get_version(void)
{
return ((u32) CMD_CHAN_IF_REV << 8) | (u32) CMD_CHAN_VER;
}
static int mlx4_get_slave_indx(struct mlx4_dev *dev, int vf)
{
if ((vf < 0) || (vf >= dev->num_vfs)) {
mlx4_err(dev, "Bad vf number:%d (number of activated vf: %d)\n", vf, dev->num_vfs);
return -EINVAL;
}
return (vf+1);
}
int mlx4_set_vf_mac(struct mlx4_dev *dev, int port, int vf, u8 *mac)
{
struct mlx4_priv *priv = mlx4_priv(dev);
struct mlx4_vport_state *s_info;
int slave;
if (!mlx4_is_master(dev))
return -EPROTONOSUPPORT;
slave = mlx4_get_slave_indx(dev, vf);
if (slave < 0)
return -EINVAL;
s_info = &priv->mfunc.master.vf_admin[slave].vport[port];
s_info->mac = mlx4_mac_to_u64(mac);
mlx4_info(dev, "default mac on vf %d port %d to %llX will take afect only after vf restart\n",
vf, port, (unsigned long long) s_info->mac);
return 0;
}
EXPORT_SYMBOL_GPL(mlx4_set_vf_mac);
int mlx4_set_vf_vlan(struct mlx4_dev *dev, int port, int vf, u16 vlan, u8 qos)
{
struct mlx4_priv *priv = mlx4_priv(dev);
struct mlx4_vport_oper_state *vf_oper;
struct mlx4_vport_state *vf_admin;
int slave;
if ((!mlx4_is_master(dev)) ||
!(dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_VLAN_CONTROL))
return -EPROTONOSUPPORT;
if ((vlan > 4095) || (qos > 7))
return -EINVAL;
slave = mlx4_get_slave_indx(dev, vf);
if (slave < 0)
return -EINVAL;
vf_admin = &priv->mfunc.master.vf_admin[slave].vport[port];
vf_oper = &priv->mfunc.master.vf_oper[slave].vport[port];
if ((0 == vlan) && (0 == qos))
vf_admin->default_vlan = MLX4_VGT;
else
vf_admin->default_vlan = vlan;
vf_admin->default_qos = qos;
if (priv->mfunc.master.slave_state[slave].active &&
dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_UPDATE_QP) {
mlx4_info(dev, "updating vf %d port %d config params immediately\n",
vf, port);
mlx4_master_immediate_activate_vlan_qos(priv, slave, port);
}
return 0;
}
EXPORT_SYMBOL_GPL(mlx4_set_vf_vlan);
/* mlx4_get_slave_default_vlan -
* retrun true if VST ( default vlan)
* if VST will fill vlan & qos (if not NULL) */
bool mlx4_get_slave_default_vlan(struct mlx4_dev *dev, int port, int slave, u16 *vlan, u8 *qos)
{
struct mlx4_vport_oper_state *vp_oper;
struct mlx4_priv *priv;
priv = mlx4_priv(dev);
vp_oper = &priv->mfunc.master.vf_oper[slave].vport[port];
if (MLX4_VGT != vp_oper->state.default_vlan) {
if (vlan)
*vlan = vp_oper->state.default_vlan;
if (qos)
*qos = vp_oper->state.default_qos;
return true;
}
return false;
}
EXPORT_SYMBOL_GPL(mlx4_get_slave_default_vlan);
int mlx4_set_vf_spoofchk(struct mlx4_dev *dev, int port, int vf, bool setting)
{
struct mlx4_priv *priv = mlx4_priv(dev);
struct mlx4_vport_state *s_info;
int slave;
if ((!mlx4_is_master(dev)) ||
!(dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_FSM))
return -EPROTONOSUPPORT;
slave = mlx4_get_slave_indx(dev, vf);
if (slave < 0)
return -EINVAL;
s_info = &priv->mfunc.master.vf_admin[slave].vport[port];
s_info->spoofchk = setting;
return 0;
}
EXPORT_SYMBOL_GPL(mlx4_set_vf_spoofchk);
int mlx4_set_vf_link_state(struct mlx4_dev *dev, int port, int vf, int link_state)
{
struct mlx4_priv *priv = mlx4_priv(dev);
struct mlx4_vport_state *s_info;
struct mlx4_vport_oper_state *vp_oper;
int slave;
u8 link_stat_event;
slave = mlx4_get_slave_indx(dev, vf);
if (slave < 0)
return -EINVAL;
switch (link_state) {
case IFLA_VF_LINK_STATE_AUTO:
/* get link curent state */
if (!priv->sense.do_sense_port[port])
link_stat_event = MLX4_PORT_CHANGE_SUBTYPE_ACTIVE;
else
link_stat_event = MLX4_PORT_CHANGE_SUBTYPE_DOWN;
break;
case IFLA_VF_LINK_STATE_ENABLE:
link_stat_event = MLX4_PORT_CHANGE_SUBTYPE_ACTIVE;
break;
case IFLA_VF_LINK_STATE_DISABLE:
link_stat_event = MLX4_PORT_CHANGE_SUBTYPE_DOWN;
break;
default:
mlx4_warn(dev, "unknown value for link_state %02x on slave %d port %d\n",
link_state, slave, port);
return -EINVAL;
};
/* update the admin & oper state on the link state */
s_info = &priv->mfunc.master.vf_admin[slave].vport[port];
vp_oper = &priv->mfunc.master.vf_oper[slave].vport[port];
s_info->link_state = link_state;
vp_oper->state.link_state = link_state;
/* send event */
mlx4_gen_port_state_change_eqe(dev, slave, port, link_stat_event);
return 0;
}
EXPORT_SYMBOL_GPL(mlx4_set_vf_link_state);
int mlx4_get_vf_link_state(struct mlx4_dev *dev, int port, int vf)
{
struct mlx4_priv *priv = mlx4_priv(dev);
struct mlx4_vport_state *s_info;
int slave;
if (!mlx4_is_master(dev))
return -EPROTONOSUPPORT;
slave = mlx4_get_slave_indx(dev, vf);
if (slave < 0)
return -EINVAL;
s_info = &priv->mfunc.master.vf_admin[slave].vport[port];
return s_info->link_state;
}
EXPORT_SYMBOL_GPL(mlx4_get_vf_link_state);
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