Merge branch 'qed-mf-updates'
Yuval Mintz says: ==================== qed: Management firmware updates This series contains several changes to driver interaction with the management fw. The biggest [& most significant] change here is a change in the locking scheme and re-definition of the 'critical section' when accessing shared resources toward the goal of interacting with the management firmware. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller
Коммит
2aa45984c2
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@ -303,6 +303,9 @@ struct qed_hwfn {
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bool b_int_enabled;
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bool b_int_requested;
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/* True if the driver requests for the link */
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bool b_drv_link_init;
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struct qed_mcp_info *mcp_info;
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struct qed_hw_cid_data *p_tx_cids;
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@ -3621,6 +3621,9 @@ struct public_port {
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u32 fc_npiv_nvram_tbl_addr;
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u32 fc_npiv_nvram_tbl_size;
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u32 transceiver_data;
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#define PMM_TRANSCEIVER_STATE_MASK 0x000000FF
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#define PMM_TRANSCEIVER_STATE_SHIFT 0x00000000
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#define PMM_TRANSCEIVER_STATE_PRESENT 0x00000001
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};
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/**************************************/
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@ -3955,6 +3958,14 @@ enum MFW_DRV_MSG_TYPE {
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MFW_DRV_MSG_DCBX_REMOTE_MIB_UPDATED,
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MFW_DRV_MSG_DCBX_OPERATIONAL_MIB_UPDATED,
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MFW_DRV_MSG_ERROR_RECOVERY,
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MFW_DRV_MSG_BW_UPDATE,
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MFW_DRV_MSG_S_TAG_UPDATE,
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MFW_DRV_MSG_GET_LAN_STATS,
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MFW_DRV_MSG_GET_FCOE_STATS,
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MFW_DRV_MSG_GET_ISCSI_STATS,
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MFW_DRV_MSG_GET_RDMA_STATS,
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MFW_DRV_MSG_FAILURE_DETECTED,
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MFW_DRV_MSG_TRANSCEIVER_STATE_CHANGE,
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MFW_DRV_MSG_MAX
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};
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@ -11,8 +11,8 @@
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#include <linux/delay.h>
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#include <linux/errno.h>
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#include <linux/kernel.h>
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#include <linux/mutex.h>
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#include <linux/slab.h>
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#include <linux/spinlock.h>
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#include <linux/string.h>
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#include "qed.h"
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#include "qed_hsi.h"
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@ -168,8 +168,8 @@ int qed_mcp_cmd_init(struct qed_hwfn *p_hwfn,
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if (!p_info->mfw_mb_shadow || !p_info->mfw_mb_addr)
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goto err;
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/* Initialize the MFW mutex */
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mutex_init(&p_info->mutex);
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/* Initialize the MFW spinlock */
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spin_lock_init(&p_info->lock);
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return 0;
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@ -179,6 +179,52 @@ err:
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return -ENOMEM;
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}
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/* Locks the MFW mailbox of a PF to ensure a single access.
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* The lock is achieved in most cases by holding a spinlock, causing other
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* threads to wait till a previous access is done.
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* In some cases (currently when a [UN]LOAD_REQ commands are sent), the single
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* access is achieved by setting a blocking flag, which will fail other
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* competing contexts to send their mailboxes.
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*/
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static int qed_mcp_mb_lock(struct qed_hwfn *p_hwfn,
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u32 cmd)
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{
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spin_lock_bh(&p_hwfn->mcp_info->lock);
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/* The spinlock shouldn't be acquired when the mailbox command is
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* [UN]LOAD_REQ, since the engine is locked by the MFW, and a parallel
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* pending [UN]LOAD_REQ command of another PF together with a spinlock
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* (i.e. interrupts are disabled) - can lead to a deadlock.
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* It is assumed that for a single PF, no other mailbox commands can be
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* sent from another context while sending LOAD_REQ, and that any
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* parallel commands to UNLOAD_REQ can be cancelled.
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*/
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if (cmd == DRV_MSG_CODE_LOAD_DONE || cmd == DRV_MSG_CODE_UNLOAD_DONE)
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p_hwfn->mcp_info->block_mb_sending = false;
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if (p_hwfn->mcp_info->block_mb_sending) {
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DP_NOTICE(p_hwfn,
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"Trying to send a MFW mailbox command [0x%x] in parallel to [UN]LOAD_REQ. Aborting.\n",
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cmd);
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spin_unlock_bh(&p_hwfn->mcp_info->lock);
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return -EBUSY;
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}
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if (cmd == DRV_MSG_CODE_LOAD_REQ || cmd == DRV_MSG_CODE_UNLOAD_REQ) {
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p_hwfn->mcp_info->block_mb_sending = true;
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spin_unlock_bh(&p_hwfn->mcp_info->lock);
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}
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return 0;
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}
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static void qed_mcp_mb_unlock(struct qed_hwfn *p_hwfn,
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u32 cmd)
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{
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if (cmd != DRV_MSG_CODE_LOAD_REQ && cmd != DRV_MSG_CODE_UNLOAD_REQ)
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spin_unlock_bh(&p_hwfn->mcp_info->lock);
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}
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int qed_mcp_reset(struct qed_hwfn *p_hwfn,
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struct qed_ptt *p_ptt)
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{
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@ -187,6 +233,13 @@ int qed_mcp_reset(struct qed_hwfn *p_hwfn,
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u32 org_mcp_reset_seq, cnt = 0;
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int rc = 0;
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/* Ensure that only a single thread is accessing the mailbox at a
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* certain time.
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*/
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rc = qed_mcp_mb_lock(p_hwfn, DRV_MSG_CODE_MCP_RESET);
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if (rc != 0)
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return rc;
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/* Set drv command along with the updated sequence */
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org_mcp_reset_seq = qed_rd(p_hwfn, p_ptt, MISCS_REG_GENERIC_POR_0);
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DRV_MB_WR(p_hwfn, p_ptt, drv_mb_header,
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@ -209,6 +262,8 @@ int qed_mcp_reset(struct qed_hwfn *p_hwfn,
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rc = -EAGAIN;
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}
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qed_mcp_mb_unlock(p_hwfn, DRV_MSG_CODE_MCP_RESET);
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return rc;
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}
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@ -275,14 +330,12 @@ static int qed_do_mcp_cmd(struct qed_hwfn *p_hwfn,
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return rc;
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}
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int qed_mcp_cmd(struct qed_hwfn *p_hwfn,
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struct qed_ptt *p_ptt,
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u32 cmd,
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u32 param,
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u32 *o_mcp_resp,
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u32 *o_mcp_param)
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static int qed_mcp_cmd_and_union(struct qed_hwfn *p_hwfn,
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struct qed_ptt *p_ptt,
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struct qed_mcp_mb_params *p_mb_params)
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{
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int rc = 0;
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u32 union_data_addr;
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int rc;
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/* MCP not initialized */
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if (!qed_mcp_is_init(p_hwfn)) {
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@ -290,28 +343,56 @@ int qed_mcp_cmd(struct qed_hwfn *p_hwfn,
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return -EBUSY;
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}
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/* Lock Mutex to ensure only single thread is
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* accessing the MCP at one time
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union_data_addr = p_hwfn->mcp_info->drv_mb_addr +
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offsetof(struct public_drv_mb, union_data);
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/* Ensure that only a single thread is accessing the mailbox at a
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* certain time.
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*/
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mutex_lock(&p_hwfn->mcp_info->mutex);
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rc = qed_do_mcp_cmd(p_hwfn, p_ptt, cmd, param,
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o_mcp_resp, o_mcp_param);
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/* Release Mutex */
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mutex_unlock(&p_hwfn->mcp_info->mutex);
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rc = qed_mcp_mb_lock(p_hwfn, p_mb_params->cmd);
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if (rc)
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return rc;
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if (p_mb_params->p_data_src != NULL)
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qed_memcpy_to(p_hwfn, p_ptt, union_data_addr,
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p_mb_params->p_data_src,
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sizeof(*p_mb_params->p_data_src));
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rc = qed_do_mcp_cmd(p_hwfn, p_ptt, p_mb_params->cmd,
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p_mb_params->param, &p_mb_params->mcp_resp,
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&p_mb_params->mcp_param);
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if (p_mb_params->p_data_dst != NULL)
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qed_memcpy_from(p_hwfn, p_ptt, p_mb_params->p_data_dst,
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union_data_addr,
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sizeof(*p_mb_params->p_data_dst));
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qed_mcp_mb_unlock(p_hwfn, p_mb_params->cmd);
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return rc;
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}
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static void qed_mcp_set_drv_ver(struct qed_dev *cdev,
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struct qed_hwfn *p_hwfn,
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struct qed_ptt *p_ptt)
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int qed_mcp_cmd(struct qed_hwfn *p_hwfn,
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struct qed_ptt *p_ptt,
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u32 cmd,
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u32 param,
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u32 *o_mcp_resp,
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u32 *o_mcp_param)
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{
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u32 i;
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struct qed_mcp_mb_params mb_params;
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int rc;
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/* Copy version string to MCP */
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for (i = 0; i < MCP_DRV_VER_STR_SIZE_DWORD; i++)
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DRV_MB_WR(p_hwfn, p_ptt, union_data.ver_str[i],
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*(u32 *)&cdev->ver_str[i * sizeof(u32)]);
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memset(&mb_params, 0, sizeof(mb_params));
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mb_params.cmd = cmd;
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mb_params.param = param;
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rc = qed_mcp_cmd_and_union(p_hwfn, p_ptt, &mb_params);
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if (rc)
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return rc;
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*o_mcp_resp = mb_params.mcp_resp;
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*o_mcp_param = mb_params.mcp_param;
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return 0;
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}
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int qed_mcp_load_req(struct qed_hwfn *p_hwfn,
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@ -319,26 +400,18 @@ int qed_mcp_load_req(struct qed_hwfn *p_hwfn,
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u32 *p_load_code)
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{
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struct qed_dev *cdev = p_hwfn->cdev;
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u32 param;
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struct qed_mcp_mb_params mb_params;
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union drv_union_data union_data;
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int rc;
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if (!qed_mcp_is_init(p_hwfn)) {
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DP_NOTICE(p_hwfn, "MFW is not initialized !\n");
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return -EBUSY;
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}
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/* Save driver's version to shmem */
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qed_mcp_set_drv_ver(cdev, p_hwfn, p_ptt);
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DP_VERBOSE(p_hwfn, QED_MSG_SP, "fw_seq 0x%08x, drv_pulse 0x%x\n",
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p_hwfn->mcp_info->drv_mb_seq,
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p_hwfn->mcp_info->drv_pulse_seq);
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memset(&mb_params, 0, sizeof(mb_params));
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/* Load Request */
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rc = qed_mcp_cmd(p_hwfn, p_ptt, DRV_MSG_CODE_LOAD_REQ,
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(PDA_COMP | DRV_ID_MCP_HSI_VER_CURRENT |
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cdev->drv_type),
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p_load_code, ¶m);
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mb_params.cmd = DRV_MSG_CODE_LOAD_REQ;
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mb_params.param = PDA_COMP | DRV_ID_MCP_HSI_VER_CURRENT |
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cdev->drv_type;
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memcpy(&union_data.ver_str, cdev->ver_str, MCP_DRV_VER_STR_SIZE);
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mb_params.p_data_src = &union_data;
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rc = qed_mcp_cmd_and_union(p_hwfn, p_ptt, &mb_params);
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/* if mcp fails to respond we must abort */
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if (rc) {
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@ -346,6 +419,8 @@ int qed_mcp_load_req(struct qed_hwfn *p_hwfn,
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return rc;
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}
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*p_load_code = mb_params.mcp_resp;
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/* If MFW refused (e.g. other port is in diagnostic mode) we
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* must abort. This can happen in the following cases:
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* - Other port is in diagnostic mode
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@ -365,6 +440,33 @@ int qed_mcp_load_req(struct qed_hwfn *p_hwfn,
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return 0;
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}
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static void qed_mcp_handle_transceiver_change(struct qed_hwfn *p_hwfn,
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struct qed_ptt *p_ptt)
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{
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u32 transceiver_state;
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transceiver_state = qed_rd(p_hwfn, p_ptt,
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p_hwfn->mcp_info->port_addr +
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offsetof(struct public_port,
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transceiver_data));
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DP_VERBOSE(p_hwfn,
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(NETIF_MSG_HW | QED_MSG_SP),
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"Received transceiver state update [0x%08x] from mfw [Addr 0x%x]\n",
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transceiver_state,
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(u32)(p_hwfn->mcp_info->port_addr +
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offsetof(struct public_port,
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transceiver_data)));
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transceiver_state = GET_FIELD(transceiver_state,
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PMM_TRANSCEIVER_STATE);
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if (transceiver_state == PMM_TRANSCEIVER_STATE_PRESENT)
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DP_NOTICE(p_hwfn, "Transceiver is present.\n");
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else
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DP_NOTICE(p_hwfn, "Transceiver is unplugged.\n");
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}
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static void qed_mcp_handle_link_change(struct qed_hwfn *p_hwfn,
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struct qed_ptt *p_ptt,
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bool b_reset)
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@ -390,7 +492,10 @@ static void qed_mcp_handle_link_change(struct qed_hwfn *p_hwfn,
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return;
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}
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p_link->link_up = !!(status & LINK_STATUS_LINK_UP);
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if (p_hwfn->b_drv_link_init)
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p_link->link_up = !!(status & LINK_STATUS_LINK_UP);
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else
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p_link->link_up = false;
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p_link->full_duplex = true;
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switch ((status & LINK_STATUS_SPEED_AND_DUPLEX_MASK)) {
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@ -492,53 +597,43 @@ int qed_mcp_set_link(struct qed_hwfn *p_hwfn,
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bool b_up)
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{
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struct qed_mcp_link_params *params = &p_hwfn->mcp_info->link_input;
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u32 param = 0, reply = 0, cmd;
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struct pmm_phy_cfg phy_cfg;
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struct qed_mcp_mb_params mb_params;
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union drv_union_data union_data;
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struct pmm_phy_cfg *phy_cfg;
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int rc = 0;
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u32 i;
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if (!qed_mcp_is_init(p_hwfn)) {
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DP_NOTICE(p_hwfn, "MFW is not initialized !\n");
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return -EBUSY;
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}
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u32 cmd;
|
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|
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/* Set the shmem configuration according to params */
|
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memset(&phy_cfg, 0, sizeof(phy_cfg));
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phy_cfg = &union_data.drv_phy_cfg;
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memset(phy_cfg, 0, sizeof(*phy_cfg));
|
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cmd = b_up ? DRV_MSG_CODE_INIT_PHY : DRV_MSG_CODE_LINK_RESET;
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if (!params->speed.autoneg)
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phy_cfg.speed = params->speed.forced_speed;
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phy_cfg.pause |= (params->pause.autoneg) ? PMM_PAUSE_AUTONEG : 0;
|
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phy_cfg.pause |= (params->pause.forced_rx) ? PMM_PAUSE_RX : 0;
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phy_cfg.pause |= (params->pause.forced_tx) ? PMM_PAUSE_TX : 0;
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phy_cfg.adv_speed = params->speed.advertised_speeds;
|
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phy_cfg.loopback_mode = params->loopback_mode;
|
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phy_cfg->speed = params->speed.forced_speed;
|
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phy_cfg->pause |= (params->pause.autoneg) ? PMM_PAUSE_AUTONEG : 0;
|
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phy_cfg->pause |= (params->pause.forced_rx) ? PMM_PAUSE_RX : 0;
|
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phy_cfg->pause |= (params->pause.forced_tx) ? PMM_PAUSE_TX : 0;
|
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phy_cfg->adv_speed = params->speed.advertised_speeds;
|
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phy_cfg->loopback_mode = params->loopback_mode;
|
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|
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/* Write the requested configuration to shmem */
|
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for (i = 0; i < sizeof(phy_cfg); i += 4)
|
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qed_wr(p_hwfn, p_ptt,
|
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p_hwfn->mcp_info->drv_mb_addr +
|
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offsetof(struct public_drv_mb, union_data) + i,
|
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((u32 *)&phy_cfg)[i >> 2]);
|
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p_hwfn->b_drv_link_init = b_up;
|
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|
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if (b_up) {
|
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DP_VERBOSE(p_hwfn, NETIF_MSG_LINK,
|
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"Configuring Link: Speed 0x%08x, Pause 0x%08x, adv_speed 0x%08x, loopback 0x%08x, features 0x%08x\n",
|
||||
phy_cfg.speed,
|
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phy_cfg.pause,
|
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phy_cfg.adv_speed,
|
||||
phy_cfg.loopback_mode,
|
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phy_cfg.feature_config_flags);
|
||||
phy_cfg->speed,
|
||||
phy_cfg->pause,
|
||||
phy_cfg->adv_speed,
|
||||
phy_cfg->loopback_mode,
|
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phy_cfg->feature_config_flags);
|
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} else {
|
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DP_VERBOSE(p_hwfn, NETIF_MSG_LINK,
|
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"Resetting link\n");
|
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}
|
||||
|
||||
DP_VERBOSE(p_hwfn, QED_MSG_SP, "fw_seq 0x%08x, drv_pulse 0x%x\n",
|
||||
p_hwfn->mcp_info->drv_mb_seq,
|
||||
p_hwfn->mcp_info->drv_pulse_seq);
|
||||
|
||||
/* Load Request */
|
||||
rc = qed_mcp_cmd(p_hwfn, p_ptt, cmd, 0, &reply, ¶m);
|
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memset(&mb_params, 0, sizeof(mb_params));
|
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mb_params.cmd = cmd;
|
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mb_params.p_data_src = &union_data;
|
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rc = qed_mcp_cmd_and_union(p_hwfn, p_ptt, &mb_params);
|
||||
|
||||
/* if mcp fails to respond we must abort */
|
||||
if (rc) {
|
||||
|
|
@ -581,6 +676,9 @@ int qed_mcp_handle_events(struct qed_hwfn *p_hwfn,
|
|||
case MFW_DRV_MSG_LINK_CHANGE:
|
||||
qed_mcp_handle_link_change(p_hwfn, p_ptt, false);
|
||||
break;
|
||||
case MFW_DRV_MSG_TRANSCEIVER_STATE_CHANGE:
|
||||
qed_mcp_handle_transceiver_change(p_hwfn, p_ptt);
|
||||
break;
|
||||
default:
|
||||
DP_NOTICE(p_hwfn, "Unimplemented MFW message %d\n", i);
|
||||
rc = -EINVAL;
|
||||
|
|
@ -801,11 +899,11 @@ int qed_mcp_drain(struct qed_hwfn *p_hwfn,
|
|||
int rc;
|
||||
|
||||
rc = qed_mcp_cmd(p_hwfn, p_ptt,
|
||||
DRV_MSG_CODE_NIG_DRAIN, 100,
|
||||
DRV_MSG_CODE_NIG_DRAIN, 1000,
|
||||
&resp, ¶m);
|
||||
|
||||
/* Wait for the drain to complete before returning */
|
||||
msleep(120);
|
||||
msleep(1020);
|
||||
|
||||
return rc;
|
||||
}
|
||||
|
|
@ -831,31 +929,28 @@ qed_mcp_send_drv_version(struct qed_hwfn *p_hwfn,
|
|||
struct qed_ptt *p_ptt,
|
||||
struct qed_mcp_drv_version *p_ver)
|
||||
{
|
||||
int rc = 0;
|
||||
u32 param = 0, reply = 0, i;
|
||||
struct drv_version_stc *p_drv_version;
|
||||
struct qed_mcp_mb_params mb_params;
|
||||
union drv_union_data union_data;
|
||||
__be32 val;
|
||||
u32 i;
|
||||
int rc;
|
||||
|
||||
if (!qed_mcp_is_init(p_hwfn)) {
|
||||
DP_NOTICE(p_hwfn, "MFW is not initialized !\n");
|
||||
return -EBUSY;
|
||||
p_drv_version = &union_data.drv_version;
|
||||
p_drv_version->version = p_ver->version;
|
||||
for (i = 0; i < MCP_DRV_VER_STR_SIZE - 1; i += 4) {
|
||||
val = cpu_to_be32(p_ver->name[i]);
|
||||
*(u32 *)&p_drv_version->name[i * sizeof(u32)] = val;
|
||||
}
|
||||
|
||||
DRV_MB_WR(p_hwfn, p_ptt, union_data.drv_version.version,
|
||||
p_ver->version);
|
||||
/* Copy version string to shmem */
|
||||
for (i = 0; i < (MCP_DRV_VER_STR_SIZE - 4) / 4; i++) {
|
||||
DRV_MB_WR(p_hwfn, p_ptt,
|
||||
union_data.drv_version.name[i * sizeof(u32)],
|
||||
*(u32 *)&p_ver->name[i * sizeof(u32)]);
|
||||
}
|
||||
|
||||
rc = qed_mcp_cmd(p_hwfn, p_ptt, DRV_MSG_CODE_SET_VERSION, 0, &reply,
|
||||
¶m);
|
||||
if (rc) {
|
||||
memset(&mb_params, 0, sizeof(mb_params));
|
||||
mb_params.cmd = DRV_MSG_CODE_SET_VERSION;
|
||||
mb_params.p_data_src = &union_data;
|
||||
rc = qed_mcp_cmd_and_union(p_hwfn, p_ptt, &mb_params);
|
||||
if (rc)
|
||||
DP_ERR(p_hwfn, "MCP response failure, aborting\n");
|
||||
return rc;
|
||||
}
|
||||
|
||||
return 0;
|
||||
return rc;
|
||||
}
|
||||
|
||||
int qed_mcp_set_led(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt,
|
||||
|
|
|
|||
|
|
@ -11,8 +11,8 @@
|
|||
|
||||
#include <linux/types.h>
|
||||
#include <linux/delay.h>
|
||||
#include <linux/mutex.h>
|
||||
#include <linux/slab.h>
|
||||
#include <linux/spinlock.h>
|
||||
#include "qed_hsi.h"
|
||||
|
||||
struct qed_mcp_link_speed_params {
|
||||
|
|
@ -255,7 +255,8 @@ int qed_mcp_set_led(struct qed_hwfn *p_hwfn,
|
|||
#define MFW_PORT(_p_hwfn) ((_p_hwfn)->abs_pf_id % \
|
||||
((_p_hwfn)->cdev->num_ports_in_engines * 2))
|
||||
struct qed_mcp_info {
|
||||
struct mutex mutex; /* MCP access lock */
|
||||
spinlock_t lock;
|
||||
bool block_mb_sending;
|
||||
u32 public_base;
|
||||
u32 drv_mb_addr;
|
||||
u32 mfw_mb_addr;
|
||||
|
|
@ -272,6 +273,15 @@ struct qed_mcp_info {
|
|||
u16 mcp_hist;
|
||||
};
|
||||
|
||||
struct qed_mcp_mb_params {
|
||||
u32 cmd;
|
||||
u32 param;
|
||||
union drv_union_data *p_data_src;
|
||||
union drv_union_data *p_data_dst;
|
||||
u32 mcp_resp;
|
||||
u32 mcp_param;
|
||||
};
|
||||
|
||||
/**
|
||||
* @brief Initialize the interface with the MCP
|
||||
*
|
||||
|
|
|
|||
Загрузка…
Ссылка в новой задаче