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net-next/hinic: Add management messages 

Add the management messages for sending to api cmd and the asynchronous
event handler for the completion of the messages.

Signed-off-by: Aviad Krawczyk <aviad.krawczyk@huawei.com>
Signed-off-by: Zhao Chen <zhaochen6@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Aviad Krawczyk 2017-08-21 23:55:51 +08:00 коммит произвёл David S. Miller
Родитель 3dcea32193
Коммит 6dd8b68214
5 изменённых файлов: 538 добавлений и 3 удалений
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35
drivers/net/ethernet/huawei/hinic/hinic_hw_api_cmd.c
Просмотреть файл

@ -53,6 +53,41 @@ enum api_cmd_xor_chk_level {
XOR_CHK_ALL = 3,
};
/**
* api_cmd - API CMD command
* @chain: chain for the command
* @dest: destination node on the card that will receive the command
* @cmd: command data
* @size: the command size
*
* Return 0 - Success, negative - Failure
**/
static int api_cmd(struct hinic_api_cmd_chain *chain,
enum hinic_node_id dest, u8 *cmd, u16 cmd_size)
{
/* should be implemented */
return -EINVAL;
}
/**
* hinic_api_cmd_write - Write API CMD command
* @chain: chain for write command
* @dest: destination node on the card that will receive the command
* @cmd: command data
* @size: the command size
*
* Return 0 - Success, negative - Failure
**/
int hinic_api_cmd_write(struct hinic_api_cmd_chain *chain,
enum hinic_node_id dest, u8 *cmd, u16 size)
{
/* Verify the chain type */
if (chain->chain_type == HINIC_API_CMD_WRITE_TO_MGMT_CPU)
return api_cmd(chain, dest, cmd, size);
return -EINVAL;
}
/**
* api_cmd_hw_restart - restart the chain in the HW
* @chain: the API CMD specific chain to restart

3
drivers/net/ethernet/huawei/hinic/hinic_hw_api_cmd.h
Просмотреть файл

@ -132,6 +132,9 @@ struct hinic_api_cmd_chain {
struct hinic_api_cmd_cell *curr_node;
};
int hinic_api_cmd_write(struct hinic_api_cmd_chain *chain,
enum hinic_node_id dest, u8 *cmd, u16 size);
int hinic_api_cmd_init(struct hinic_api_cmd_chain **chain,
struct hinic_hwif *hwif);

5
drivers/net/ethernet/huawei/hinic/hinic_hw_if.h
Просмотреть файл

@ -93,6 +93,7 @@
#define HINIC_HWIF_NUM_IRQS(hwif) ((hwif)->attr.num_irqs)
#define HINIC_HWIF_FUNC_IDX(hwif) ((hwif)->attr.func_idx)
#define HINIC_HWIF_PCI_INTF(hwif) ((hwif)->attr.pci_intf_idx)
#define HINIC_HWIF_PF_IDX(hwif) ((hwif)->attr.pf_idx)
#define HINIC_FUNC_TYPE(hwif) ((hwif)->attr.func_type)
#define HINIC_IS_PF(hwif) (HINIC_FUNC_TYPE(hwif) == HINIC_PF)
@ -127,6 +128,10 @@ enum hinic_mod_type {
HINIC_MOD_MAX = 15
};
enum hinic_node_id {
HINIC_NODE_ID_MGMT = 21,
};
struct hinic_func_attr {
u16 func_idx;
u8 pf_idx;

439
drivers/net/ethernet/huawei/hinic/hinic_hw_mgmt.c
Просмотреть файл

@ -16,6 +16,12 @@
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/errno.h>
#include <linux/pci.h>
#include <linux/device.h>
#include <linux/semaphore.h>
#include <linux/completion.h>
#include <linux/slab.h>
#include <asm/barrier.h>
#include "hinic_hw_if.h"
#include "hinic_hw_eqs.h"
@ -23,9 +29,267 @@
#include "hinic_hw_mgmt.h"
#include "hinic_hw_dev.h"
#define SYNC_MSG_ID_MASK 0x1FF
#define SYNC_MSG_ID(pf_to_mgmt) ((pf_to_mgmt)->sync_msg_id)
#define SYNC_MSG_ID_INC(pf_to_mgmt) (SYNC_MSG_ID(pf_to_mgmt) = \
((SYNC_MSG_ID(pf_to_mgmt) + 1) & \
SYNC_MSG_ID_MASK))
#define MSG_SZ_IS_VALID(in_size) ((in_size) <= MAX_MSG_LEN)
#define MGMT_MSG_LEN_MIN 20
#define MGMT_MSG_LEN_STEP 16
#define MGMT_MSG_RSVD_FOR_DEV 8
#define SEGMENT_LEN 48
#define MAX_PF_MGMT_BUF_SIZE 2048
/* Data should be SEG LEN size aligned */
#define MAX_MSG_LEN 2016
#define MSG_NOT_RESP 0xFFFF
#define MGMT_MSG_TIMEOUT 1000
#define mgmt_to_pfhwdev(pf_mgmt) \
container_of(pf_mgmt, struct hinic_pfhwdev, pf_to_mgmt)
enum msg_segment_type {
NOT_LAST_SEGMENT = 0,
LAST_SEGMENT = 1,
};
enum mgmt_direction_type {
MGMT_DIRECT_SEND = 0,
MGMT_RESP = 1,
};
enum msg_ack_type {
MSG_ACK = 0,
MSG_NO_ACK = 1,
};
/**
* prepare_header - prepare the header of the message
* @pf_to_mgmt: PF to MGMT channel
* @msg_len: the length of the message
* @mod: module in the chip that will get the message
* @ack_type: ask for response
* @direction: the direction of the message
* @cmd: command of the message
* @msg_id: message id
*
* Return the prepared header value
**/
static u64 prepare_header(struct hinic_pf_to_mgmt *pf_to_mgmt,
u16 msg_len, enum hinic_mod_type mod,
enum msg_ack_type ack_type,
enum mgmt_direction_type direction,
u16 cmd, u16 msg_id)
{
struct hinic_hwif *hwif = pf_to_mgmt->hwif;
return HINIC_MSG_HEADER_SET(msg_len, MSG_LEN) |
HINIC_MSG_HEADER_SET(mod, MODULE) |
HINIC_MSG_HEADER_SET(SEGMENT_LEN, SEG_LEN) |
HINIC_MSG_HEADER_SET(ack_type, NO_ACK) |
HINIC_MSG_HEADER_SET(0, ASYNC_MGMT_TO_PF) |
HINIC_MSG_HEADER_SET(0, SEQID) |
HINIC_MSG_HEADER_SET(LAST_SEGMENT, LAST) |
HINIC_MSG_HEADER_SET(direction, DIRECTION) |
HINIC_MSG_HEADER_SET(cmd, CMD) |
HINIC_MSG_HEADER_SET(HINIC_HWIF_PCI_INTF(hwif), PCI_INTF) |
HINIC_MSG_HEADER_SET(HINIC_HWIF_PF_IDX(hwif), PF_IDX) |
HINIC_MSG_HEADER_SET(msg_id, MSG_ID);
}
/**
* prepare_mgmt_cmd - prepare the mgmt command
* @mgmt_cmd: pointer to the command to prepare
* @header: pointer of the header for the message
* @msg: the data of the message
* @msg_len: the length of the message
**/
static void prepare_mgmt_cmd(u8 *mgmt_cmd, u64 *header, u8 *msg, u16 msg_len)
{
memset(mgmt_cmd, 0, MGMT_MSG_RSVD_FOR_DEV);
mgmt_cmd += MGMT_MSG_RSVD_FOR_DEV;
memcpy(mgmt_cmd, header, sizeof(*header));
mgmt_cmd += sizeof(*header);
memcpy(mgmt_cmd, msg, msg_len);
}
/**
* mgmt_msg_len - calculate the total message length
* @msg_data_len: the length of the message data
*
* Return the total message length
**/
static u16 mgmt_msg_len(u16 msg_data_len)
{
/* RSVD + HEADER_SIZE + DATA_LEN */
u16 msg_len = MGMT_MSG_RSVD_FOR_DEV + sizeof(u64) + msg_data_len;
if (msg_len > MGMT_MSG_LEN_MIN)
msg_len = MGMT_MSG_LEN_MIN +
ALIGN((msg_len - MGMT_MSG_LEN_MIN),
MGMT_MSG_LEN_STEP);
else
msg_len = MGMT_MSG_LEN_MIN;
return msg_len;
}
/**
* send_msg_to_mgmt - send message to mgmt by API CMD
* @pf_to_mgmt: PF to MGMT channel
* @mod: module in the chip that will get the message
* @cmd: command of the message
* @data: the msg data
* @data_len: the msg data length
* @ack_type: ask for response
* @direction: the direction of the original message
* @resp_msg_id: msg id to response for
*
* Return 0 - Success, negative - Failure
**/
static int send_msg_to_mgmt(struct hinic_pf_to_mgmt *pf_to_mgmt,
enum hinic_mod_type mod, u8 cmd,
u8 *data, u16 data_len,
enum msg_ack_type ack_type,
enum mgmt_direction_type direction,
u16 resp_msg_id)
{
struct hinic_api_cmd_chain *chain;
u64 header;
u16 msg_id;
msg_id = SYNC_MSG_ID(pf_to_mgmt);
if (direction == MGMT_RESP) {
header = prepare_header(pf_to_mgmt, data_len, mod, ack_type,
direction, cmd, resp_msg_id);
} else {
SYNC_MSG_ID_INC(pf_to_mgmt);
header = prepare_header(pf_to_mgmt, data_len, mod, ack_type,
direction, cmd, msg_id);
}
prepare_mgmt_cmd(pf_to_mgmt->sync_msg_buf, &header, data, data_len);
chain = pf_to_mgmt->cmd_chain[HINIC_API_CMD_WRITE_TO_MGMT_CPU];
return hinic_api_cmd_write(chain, HINIC_NODE_ID_MGMT,
pf_to_mgmt->sync_msg_buf,
mgmt_msg_len(data_len));
}
/**
* msg_to_mgmt_sync - send sync message to mgmt
* @pf_to_mgmt: PF to MGMT channel
* @mod: module in the chip that will get the message
* @cmd: command of the message
* @buf_in: the msg data
* @in_size: the msg data length
* @buf_out: response
* @out_size: response length
* @direction: the direction of the original message
* @resp_msg_id: msg id to response for
*
* Return 0 - Success, negative - Failure
**/
static int msg_to_mgmt_sync(struct hinic_pf_to_mgmt *pf_to_mgmt,
enum hinic_mod_type mod, u8 cmd,
u8 *buf_in, u16 in_size,
u8 *buf_out, u16 *out_size,
enum mgmt_direction_type direction,
u16 resp_msg_id)
{
struct hinic_hwif *hwif = pf_to_mgmt->hwif;
struct pci_dev *pdev = hwif->pdev;
struct hinic_recv_msg *recv_msg;
struct completion *recv_done;
u16 msg_id;
int err;
/* Lock the sync_msg_buf */
down(&pf_to_mgmt->sync_msg_lock);
recv_msg = &pf_to_mgmt->recv_resp_msg_from_mgmt;
recv_done = &recv_msg->recv_done;
if (resp_msg_id == MSG_NOT_RESP)
msg_id = SYNC_MSG_ID(pf_to_mgmt);
else
msg_id = resp_msg_id;
init_completion(recv_done);
err = send_msg_to_mgmt(pf_to_mgmt, mod, cmd, buf_in, in_size,
MSG_ACK, direction, resp_msg_id);
if (err) {
dev_err(&pdev->dev, "Failed to send sync msg to mgmt\n");
goto unlock_sync_msg;
}
if (!wait_for_completion_timeout(recv_done, MGMT_MSG_TIMEOUT)) {
dev_err(&pdev->dev, "MGMT timeout, MSG id = %d\n", msg_id);
err = -ETIMEDOUT;
goto unlock_sync_msg;
}
smp_rmb(); /* verify reading after completion */
if (recv_msg->msg_id != msg_id) {
dev_err(&pdev->dev, "incorrect MSG for id = %d\n", msg_id);
err = -EFAULT;
goto unlock_sync_msg;
}
if ((buf_out) && (recv_msg->msg_len <= MAX_PF_MGMT_BUF_SIZE)) {
memcpy(buf_out, recv_msg->msg, recv_msg->msg_len);
*out_size = recv_msg->msg_len;
}
unlock_sync_msg:
up(&pf_to_mgmt->sync_msg_lock);
return err;
}
/**
* msg_to_mgmt_async - send message to mgmt without response
* @pf_to_mgmt: PF to MGMT channel
* @mod: module in the chip that will get the message
* @cmd: command of the message
* @buf_in: the msg data
* @in_size: the msg data length
* @direction: the direction of the original message
* @resp_msg_id: msg id to response for
*
* Return 0 - Success, negative - Failure
**/
static int msg_to_mgmt_async(struct hinic_pf_to_mgmt *pf_to_mgmt,
enum hinic_mod_type mod, u8 cmd,
u8 *buf_in, u16 in_size,
enum mgmt_direction_type direction,
u16 resp_msg_id)
{
int err;
/* Lock the sync_msg_buf */
down(&pf_to_mgmt->sync_msg_lock);
err = send_msg_to_mgmt(pf_to_mgmt, mod, cmd, buf_in, in_size,
MSG_NO_ACK, direction, resp_msg_id);
up(&pf_to_mgmt->sync_msg_lock);
return err;
}
/**
* hinic_msg_to_mgmt - send message to mgmt
* @pf_to_mgmt: PF to MGMT channel
@ -44,8 +308,98 @@ int hinic_msg_to_mgmt(struct hinic_pf_to_mgmt *pf_to_mgmt,
void *buf_in, u16 in_size, void *buf_out, u16 *out_size,
enum hinic_mgmt_msg_type sync)
{
/* should be implemented */
return -EINVAL;
struct hinic_hwif *hwif = pf_to_mgmt->hwif;
struct pci_dev *pdev = hwif->pdev;
if (sync != HINIC_MGMT_MSG_SYNC) {
dev_err(&pdev->dev, "Invalid MGMT msg type\n");
return -EINVAL;
}
if (!MSG_SZ_IS_VALID(in_size)) {
dev_err(&pdev->dev, "Invalid MGMT msg buffer size\n");
return -EINVAL;
}
return msg_to_mgmt_sync(pf_to_mgmt, mod, cmd, buf_in, in_size,
buf_out, out_size, MGMT_DIRECT_SEND,
MSG_NOT_RESP);
}
/**
* mgmt_recv_msg_handler - handler for message from mgmt cpu
* @pf_to_mgmt: PF to MGMT channel
* @recv_msg: received message details
**/
static void mgmt_recv_msg_handler(struct hinic_pf_to_mgmt *pf_to_mgmt,
struct hinic_recv_msg *recv_msg)
{
struct hinic_hwif *hwif = pf_to_mgmt->hwif;
struct pci_dev *pdev = hwif->pdev;
u8 *buf_out = recv_msg->buf_out;
u16 out_size = 0;
dev_err(&pdev->dev, "No MGMT msg handler, mod = %d\n", recv_msg->mod);
if (!recv_msg->async_mgmt_to_pf)
/* MGMT sent sync msg, send the response */
msg_to_mgmt_async(pf_to_mgmt, recv_msg->mod, recv_msg->cmd,
buf_out, out_size, MGMT_RESP,
recv_msg->msg_id);
}
/**
* mgmt_resp_msg_handler - handler for a response message from mgmt cpu
* @pf_to_mgmt: PF to MGMT channel
* @recv_msg: received message details
**/
static void mgmt_resp_msg_handler(struct hinic_pf_to_mgmt *pf_to_mgmt,
struct hinic_recv_msg *recv_msg)
{
wmb(); /* verify writing all, before reading */
complete(&recv_msg->recv_done);
}
/**
* recv_mgmt_msg_handler - handler for a message from mgmt cpu
* @pf_to_mgmt: PF to MGMT channel
* @header: the header of the message
* @recv_msg: received message details
**/
static void recv_mgmt_msg_handler(struct hinic_pf_to_mgmt *pf_to_mgmt,
u64 *header, struct hinic_recv_msg *recv_msg)
{
struct hinic_hwif *hwif = pf_to_mgmt->hwif;
struct pci_dev *pdev = hwif->pdev;
int seq_id, seg_len;
u8 *msg_body;
seq_id = HINIC_MSG_HEADER_GET(*header, SEQID);
seg_len = HINIC_MSG_HEADER_GET(*header, SEG_LEN);
if (seq_id >= (MAX_MSG_LEN / SEGMENT_LEN)) {
dev_err(&pdev->dev, "recv big mgmt msg\n");
return;
}
msg_body = (u8 *)header + sizeof(*header);
memcpy(recv_msg->msg + seq_id * SEGMENT_LEN, msg_body, seg_len);
if (!HINIC_MSG_HEADER_GET(*header, LAST))
return;
recv_msg->cmd = HINIC_MSG_HEADER_GET(*header, CMD);
recv_msg->mod = HINIC_MSG_HEADER_GET(*header, MODULE);
recv_msg->async_mgmt_to_pf = HINIC_MSG_HEADER_GET(*header,
ASYNC_MGMT_TO_PF);
recv_msg->msg_len = HINIC_MSG_HEADER_GET(*header, MSG_LEN);
recv_msg->msg_id = HINIC_MSG_HEADER_GET(*header, MSG_ID);
if (HINIC_MSG_HEADER_GET(*header, DIRECTION) == MGMT_RESP)
mgmt_resp_msg_handler(pf_to_mgmt, recv_msg);
else
mgmt_recv_msg_handler(pf_to_mgmt, recv_msg);
}
/**
@ -56,7 +410,77 @@ int hinic_msg_to_mgmt(struct hinic_pf_to_mgmt *pf_to_mgmt,
**/
static void mgmt_msg_aeqe_handler(void *handle, void *data, u8 size)
{
/* should be implemented */
struct hinic_pf_to_mgmt *pf_to_mgmt = handle;
struct hinic_recv_msg *recv_msg;
u64 *header = (u64 *)data;
recv_msg = HINIC_MSG_HEADER_GET(*header, DIRECTION) ==
MGMT_DIRECT_SEND ?
&pf_to_mgmt->recv_msg_from_mgmt :
&pf_to_mgmt->recv_resp_msg_from_mgmt;
recv_mgmt_msg_handler(pf_to_mgmt, header, recv_msg);
}
/**
* alloc_recv_msg - allocate receive message memory
* @pf_to_mgmt: PF to MGMT channel
* @recv_msg: pointer that will hold the allocated data
*
* Return 0 - Success, negative - Failure
**/
static int alloc_recv_msg(struct hinic_pf_to_mgmt *pf_to_mgmt,
struct hinic_recv_msg *recv_msg)
{
struct hinic_hwif *hwif = pf_to_mgmt->hwif;
struct pci_dev *pdev = hwif->pdev;
recv_msg->msg = devm_kzalloc(&pdev->dev, MAX_PF_MGMT_BUF_SIZE,
GFP_KERNEL);
if (!recv_msg->msg)
return -ENOMEM;
recv_msg->buf_out = devm_kzalloc(&pdev->dev, MAX_PF_MGMT_BUF_SIZE,
GFP_KERNEL);
if (!recv_msg->buf_out)
return -ENOMEM;
return 0;
}
/**
* alloc_msg_buf - allocate all the message buffers of PF to MGMT channel
* @pf_to_mgmt: PF to MGMT channel
*
* Return 0 - Success, negative - Failure
**/
static int alloc_msg_buf(struct hinic_pf_to_mgmt *pf_to_mgmt)
{
struct hinic_hwif *hwif = pf_to_mgmt->hwif;
struct pci_dev *pdev = hwif->pdev;
int err;
err = alloc_recv_msg(pf_to_mgmt,
&pf_to_mgmt->recv_msg_from_mgmt);
if (err) {
dev_err(&pdev->dev, "Failed to allocate recv msg\n");
return err;
}
err = alloc_recv_msg(pf_to_mgmt,
&pf_to_mgmt->recv_resp_msg_from_mgmt);
if (err) {
dev_err(&pdev->dev, "Failed to allocate resp recv msg\n");
return err;
}
pf_to_mgmt->sync_msg_buf = devm_kzalloc(&pdev->dev,
MAX_PF_MGMT_BUF_SIZE,
GFP_KERNEL);
if (!pf_to_mgmt->sync_msg_buf)
return -ENOMEM;
return 0;
}
/**
@ -76,6 +500,15 @@ int hinic_pf_to_mgmt_init(struct hinic_pf_to_mgmt *pf_to_mgmt,
pf_to_mgmt->hwif = hwif;
sema_init(&pf_to_mgmt->sync_msg_lock, 1);
pf_to_mgmt->sync_msg_id = 0;
err = alloc_msg_buf(pf_to_mgmt);
if (err) {
dev_err(&pdev->dev, "Failed to allocate msg buffers\n");
return err;
}
err = hinic_api_cmd_init(pf_to_mgmt->cmd_chain, hwif);
if (err) {
dev_err(&pdev->dev, "Failed to initialize cmd chains\n");

59
drivers/net/ethernet/huawei/hinic/hinic_hw_mgmt.h
Просмотреть файл

@ -17,10 +17,48 @@
#define HINIC_HW_MGMT_H
#include <linux/types.h>
#include <linux/semaphore.h>
#include <linux/completion.h>
#include "hinic_hw_if.h"
#include "hinic_hw_api_cmd.h"
#define HINIC_MSG_HEADER_MSG_LEN_SHIFT 0
#define HINIC_MSG_HEADER_MODULE_SHIFT 11
#define HINIC_MSG_HEADER_SEG_LEN_SHIFT 16
#define HINIC_MSG_HEADER_NO_ACK_SHIFT 22
#define HINIC_MSG_HEADER_ASYNC_MGMT_TO_PF_SHIFT 23
#define HINIC_MSG_HEADER_SEQID_SHIFT 24
#define HINIC_MSG_HEADER_LAST_SHIFT 30
#define HINIC_MSG_HEADER_DIRECTION_SHIFT 31
#define HINIC_MSG_HEADER_CMD_SHIFT 32
#define HINIC_MSG_HEADER_ZEROS_SHIFT 40
#define HINIC_MSG_HEADER_PCI_INTF_SHIFT 48
#define HINIC_MSG_HEADER_PF_IDX_SHIFT 50
#define HINIC_MSG_HEADER_MSG_ID_SHIFT 54
#define HINIC_MSG_HEADER_MSG_LEN_MASK 0x7FF
#define HINIC_MSG_HEADER_MODULE_MASK 0x1F
#define HINIC_MSG_HEADER_SEG_LEN_MASK 0x3F
#define HINIC_MSG_HEADER_NO_ACK_MASK 0x1
#define HINIC_MSG_HEADER_ASYNC_MGMT_TO_PF_MASK 0x1
#define HINIC_MSG_HEADER_SEQID_MASK 0x3F
#define HINIC_MSG_HEADER_LAST_MASK 0x1
#define HINIC_MSG_HEADER_DIRECTION_MASK 0x1
#define HINIC_MSG_HEADER_CMD_MASK 0xFF
#define HINIC_MSG_HEADER_ZEROS_MASK 0xFF
#define HINIC_MSG_HEADER_PCI_INTF_MASK 0x3
#define HINIC_MSG_HEADER_PF_IDX_MASK 0xF
#define HINIC_MSG_HEADER_MSG_ID_MASK 0x3FF
#define HINIC_MSG_HEADER_SET(val, member) \
((u64)((val) & HINIC_MSG_HEADER_##member##_MASK) << \
HINIC_MSG_HEADER_##member##_SHIFT)
#define HINIC_MSG_HEADER_GET(val, member) \
(((val) >> HINIC_MSG_HEADER_##member##_SHIFT) & \
HINIC_MSG_HEADER_##member##_MASK)
enum hinic_mgmt_msg_type {
HINIC_MGMT_MSG_SYNC = 1,
};
@ -29,9 +67,30 @@ enum hinic_cfg_cmd {
HINIC_CFG_NIC_CAP = 0,
};
struct hinic_recv_msg {
u8 *msg;
u8 *buf_out;
struct completion recv_done;
u16 cmd;
enum hinic_mod_type mod;
int async_mgmt_to_pf;
u16 msg_len;
u16 msg_id;
};
struct hinic_pf_to_mgmt {
struct hinic_hwif *hwif;
struct semaphore sync_msg_lock;
u16 sync_msg_id;
u8 *sync_msg_buf;
struct hinic_recv_msg recv_resp_msg_from_mgmt;
struct hinic_recv_msg recv_msg_from_mgmt;
struct hinic_api_cmd_chain *cmd_chain[HINIC_API_CMD_MAX];
};