@@ -114,6 +114,12 @@ struct lpfc_sli2_slim;
#define LPFC_MBX_NO_WAIT 0
#define LPFC_MBX_WAIT 1
+#define LPFC_CFG_PARAM_MAGIC_NUM 0xFEAA0005
+#define LPFC_PORT_CFG_NAME "/cfg/port.cfg"
+
+#define lpfc_rangecheck(val, min, max) \
+ ((uint)(val) >= (uint)(min) && (val) <= (max))
+
enum lpfc_polling_flags {
ENABLE_FCP_RING_POLLING = 0x1,
DISABLE_FCP_RING_INT = 0x2
@@ -403,6 +409,26 @@ struct lpfc_trunk_link {
link3;
};
+/* Format of congestion module parameters */
+struct lpfc_cgn_param {
+ uint32_t cgn_param_magic;
+ uint8_t cgn_param_version; /* version 1 */
+ uint8_t cgn_param_mode; /* 0=off 1=managed 2=monitor only */
+#define LPFC_CFG_OFF 0
+#define LPFC_CFG_MANAGED 1
+#define LPFC_CFG_MONITOR 2
+ uint8_t cgn_rsvd1;
+ uint8_t cgn_rsvd2;
+ uint8_t cgn_param_level0;
+ uint8_t cgn_param_level1;
+ uint8_t cgn_param_level2;
+ uint8_t byte11;
+ uint8_t byte12;
+ uint8_t byte13;
+ uint8_t byte14;
+ uint8_t byte15;
+};
+
/* Max number of days of congestion data */
#define LPFC_MAX_CGN_DAYS 10
@@ -1491,6 +1517,9 @@ struct lpfc_hba {
u32 cgn_sig_freq;
u32 cgn_acqe_cnt;
+ /* Congestion parameters from flash */
+ struct lpfc_cgn_param cgn_p;
+
/* Statistics counter for ACQE cgn alarms and warnings */
struct lpfc_cgn_acqe_stat cgn_acqe_stat;
@@ -2248,11 +2248,6 @@ lpfc_sriov_hw_max_virtfn_show(struct device *dev,
return scnprintf(buf, PAGE_SIZE, "%d\n", max_nr_virtfn);
}
-static inline bool lpfc_rangecheck(uint val, uint min, uint max)
-{
- return val >= min && val <= max;
-}
-
/**
* lpfc_enable_bbcr_set: Sets an attribute value.
* @phba: pointer the the adapter structure.
@@ -77,6 +77,7 @@ int lpfc_post_rq_buffer(struct lpfc_hba *phba, struct lpfc_queue *hrq,
struct lpfc_queue *drq, int count, int idx);
void lpfc_init_congestion_stat(struct lpfc_hba *phba);
void lpfc_init_congestion_buf(struct lpfc_hba *phba);
+int lpfc_sli4_cgn_params_read(struct lpfc_hba *phba);
int lpfc_config_cgn_signal(struct lpfc_hba *phba);
void lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *, LPFC_MBOXQ_t *);
@@ -220,6 +221,9 @@ irqreturn_t lpfc_sli_fp_intr_handler(int, void *);
irqreturn_t lpfc_sli4_intr_handler(int, void *);
irqreturn_t lpfc_sli4_hba_intr_handler(int, void *);
+int lpfc_read_object(struct lpfc_hba *phba, char *s, uint32_t *datap,
+ uint32_t len);
+
void lpfc_sli4_cleanup_poll_list(struct lpfc_hba *phba);
int lpfc_sli4_poll_eq(struct lpfc_queue *q, uint8_t path);
void lpfc_sli4_poll_hbtimer(struct timer_list *t);
@@ -1134,6 +1134,12 @@ struct lpfc_mbx_sge {
uint32_t length;
};
+struct lpfc_mbx_host_buf {
+ uint32_t length;
+ uint32_t pa_lo;
+ uint32_t pa_hi;
+};
+
struct lpfc_mbx_nembed_cmd {
struct lpfc_sli4_cfg_mhdr cfg_mhdr;
#define LPFC_SLI4_MBX_SGE_MAX_PAGES 19
@@ -1144,6 +1150,30 @@ struct lpfc_mbx_nembed_sge_virt {
void *addr[LPFC_SLI4_MBX_SGE_MAX_PAGES];
};
+struct lpfc_mbx_read_object { /* Version 0 */
+ struct mbox_header header;
+ union {
+ struct {
+ uint32_t word0;
+#define lpfc_mbx_rd_object_rlen_SHIFT 0
+#define lpfc_mbx_rd_object_rlen_MASK 0x00FFFFFF
+#define lpfc_mbx_rd_object_rlen_WORD word0
+ uint32_t rd_object_offset;
+ uint32_t rd_object_name[26];
+#define LPFC_OBJ_NAME_SZ 104 /* 26 x sizeof(uint32_t) is 104. */
+ uint32_t rd_object_cnt;
+ struct lpfc_mbx_host_buf rd_object_hbuf[4];
+ } request;
+ struct {
+ uint32_t rd_object_actual_rlen;
+ uint32_t word1;
+#define lpfc_mbx_rd_object_eof_SHIFT 31
+#define lpfc_mbx_rd_object_eof_MASK 0x1
+#define lpfc_mbx_rd_object_eof_WORD word1
+ } response;
+ } u;
+};
+
struct lpfc_mbx_eq_create {
struct mbox_header header;
union {
@@ -2339,6 +2369,7 @@ struct lpfc_mbx_redisc_fcf_tbl {
#define ADD_STATUS_OPERATION_ALREADY_ACTIVE 0x67
#define ADD_STATUS_FW_NOT_SUPPORTED 0xEB
#define ADD_STATUS_INVALID_REQUEST 0x4B
+#define ADD_STATUS_INVALID_OBJECT_NAME 0xA0
#define ADD_STATUS_FW_DOWNLOAD_HW_DISABLED 0x58
struct lpfc_mbx_sli4_config {
@@ -3893,6 +3924,7 @@ struct lpfc_mqe {
struct lpfc_mbx_unreg_fcfi unreg_fcfi;
struct lpfc_mbx_mq_create mq_create;
struct lpfc_mbx_mq_create_ext mq_create_ext;
+ struct lpfc_mbx_read_object read_object;
struct lpfc_mbx_eq_create eq_create;
struct lpfc_mbx_modify_eq_delay eq_delay;
struct lpfc_mbx_cq_create cq_create;
@@ -6113,6 +6113,194 @@ lpfc_sli4_async_grp5_evt(struct lpfc_hba *phba,
phba->sli4_hba.link_state.logical_speed);
}
+/**
+ * lpfc_cgn_params_val - Validate FW congestion parameters.
+ * @phba: pointer to lpfc hba data structure.
+ * @p_cfg_param: pointer to FW provided congestion parameters.
+ *
+ * This routine validates the congestion parameters passed
+ * by the FW to the driver via an ACQE event.
+ **/
+static void
+lpfc_cgn_params_val(struct lpfc_hba *phba, struct lpfc_cgn_param *p_cfg_param)
+{
+ spin_lock_irq(&phba->hbalock);
+
+ if (!lpfc_rangecheck(p_cfg_param->cgn_param_mode, LPFC_CFG_OFF,
+ LPFC_CFG_MONITOR)) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_CGN_MGMT,
+ "6225 CMF mode param out of range: %d\n",
+ p_cfg_param->cgn_param_mode);
+ p_cfg_param->cgn_param_mode = LPFC_CFG_OFF;
+ }
+
+ spin_unlock_irq(&phba->hbalock);
+}
+
+/**
+ * lpfc_cgn_params_parse - Process a FW cong parm change event
+ * @phba: pointer to lpfc hba data structure.
+ * @p_cgn_param: pointer to a data buffer with the FW cong params.
+ * @len: the size of pdata in bytes.
+ *
+ * This routine validates the congestion management buffer signature
+ * from the FW, validates the contents and makes corrections for
+ * valid, in-range values. If the signature magic is correct and
+ * after parameter validation, the contents are copied to the driver's
+ * @phba structure. If the magic is incorrect, an error message is
+ * logged.
+ **/
+static void
+lpfc_cgn_params_parse(struct lpfc_hba *phba,
+ struct lpfc_cgn_param *p_cgn_param, uint32_t len)
+{
+ uint32_t oldmode;
+
+ /* Make sure the FW has encoded the correct magic number to
+ * validate the congestion parameter in FW memory.
+ */
+ if (p_cgn_param->cgn_param_magic == LPFC_CFG_PARAM_MAGIC_NUM) {
+ lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT | LOG_INIT,
+ "4668 FW cgn parm buffer data: "
+ "magic 0x%x version %d mode %d "
+ "level0 %d level1 %d "
+ "level2 %d byte13 %d "
+ "byte14 %d byte15 %d "
+ "byte11 %d byte12 %d activeMode %d\n",
+ p_cgn_param->cgn_param_magic,
+ p_cgn_param->cgn_param_version,
+ p_cgn_param->cgn_param_mode,
+ p_cgn_param->cgn_param_level0,
+ p_cgn_param->cgn_param_level1,
+ p_cgn_param->cgn_param_level2,
+ p_cgn_param->byte13,
+ p_cgn_param->byte14,
+ p_cgn_param->byte15,
+ p_cgn_param->byte11,
+ p_cgn_param->byte12,
+ phba->cmf_active_mode);
+
+ oldmode = phba->cmf_active_mode;
+
+ /* Any parameters out of range are corrected to defaults
+ * by this routine. No need to fail.
+ */
+ lpfc_cgn_params_val(phba, p_cgn_param);
+
+ /* Parameters are verified, move them into driver storage */
+ spin_lock_irq(&phba->hbalock);
+ memcpy(&phba->cgn_p, p_cgn_param,
+ sizeof(struct lpfc_cgn_param));
+
+ spin_unlock_irq(&phba->hbalock);
+
+ phba->cmf_active_mode = phba->cgn_p.cgn_param_mode;
+
+ switch (oldmode) {
+ case LPFC_CFG_OFF:
+ if (phba->cgn_p.cgn_param_mode != LPFC_CFG_OFF) {
+ /* Turning CMF on */
+
+ if (phba->link_state >= LPFC_LINK_UP) {
+ phba->cgn_reg_fpin =
+ phba->cgn_init_reg_fpin;
+ phba->cgn_reg_signal =
+ phba->cgn_init_reg_signal;
+ lpfc_issue_els_edc(phba->pport, 0);
+ }
+ }
+ break;
+ case LPFC_CFG_MANAGED:
+ switch (phba->cgn_p.cgn_param_mode) {
+ case LPFC_CFG_OFF:
+ /* Turning CMF off */
+ if (phba->link_state >= LPFC_LINK_UP)
+ lpfc_issue_els_edc(phba->pport, 0);
+ break;
+ case LPFC_CFG_MONITOR:
+ lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,
+ "4661 Switch from MANAGED to "
+ "`MONITOR mode\n");
+ break;
+ }
+ break;
+ case LPFC_CFG_MONITOR:
+ switch (phba->cgn_p.cgn_param_mode) {
+ case LPFC_CFG_OFF:
+ /* Turning CMF off */
+ if (phba->link_state >= LPFC_LINK_UP)
+ lpfc_issue_els_edc(phba->pport, 0);
+ break;
+ case LPFC_CFG_MANAGED:
+ lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,
+ "4662 Switch from MONITOR to "
+ "MANAGED mode\n");
+ break;
+ }
+ break;
+ }
+ } else {
+ lpfc_printf_log(phba, KERN_ERR, LOG_CGN_MGMT | LOG_INIT,
+ "4669 FW cgn parm buf wrong magic 0x%x "
+ "version %d\n", p_cgn_param->cgn_param_magic,
+ p_cgn_param->cgn_param_version);
+ }
+}
+
+/**
+ * lpfc_sli4_cgn_params_read - Read and Validate FW congestion parameters.
+ * @phba: pointer to lpfc hba data structure.
+ *
+ * This routine issues a read_object mailbox command to
+ * get the congestion management parameters from the FW
+ * parses it and updates the driver maintained values.
+ *
+ * Returns
+ * 0 if the object was empty
+ * -Eval if an error was encountered
+ * Count if bytes were read from object
+ **/
+int
+lpfc_sli4_cgn_params_read(struct lpfc_hba *phba)
+{
+ int ret = 0;
+ struct lpfc_cgn_param *p_cgn_param = NULL;
+ u32 *pdata = NULL;
+ u32 len = 0;
+
+ /* Find out if the FW has a new set of congestion parameters. */
+ len = sizeof(struct lpfc_cgn_param);
+ pdata = kzalloc(len, GFP_KERNEL);
+ ret = lpfc_read_object(phba, (char *)LPFC_PORT_CFG_NAME,
+ pdata, len);
+
+ /* 0 means no data. A negative means error. A positive means
+ * bytes were copied.
+ */
+ if (!ret) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_CGN_MGMT | LOG_INIT,
+ "4670 CGN RD OBJ returns no data\n");
+ goto rd_obj_err;
+ } else if (ret < 0) {
+ /* Some error. Just exit and return it to the caller.*/
+ goto rd_obj_err;
+ }
+
+ lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT | LOG_INIT,
+ "6234 READ CGN PARAMS Successful %d\n", len);
+
+ /* Parse data pointer over len and update the phba congestion
+ * parameters with values passed back. The receive rate values
+ * may have been altered in FW, but take no action here.
+ */
+ p_cgn_param = (struct lpfc_cgn_param *)pdata;
+ lpfc_cgn_params_parse(phba, p_cgn_param, len);
+
+ rd_obj_err:
+ kfree(pdata);
+ return ret;
+}
+
/**
* lpfc_sli4_async_event_proc - Process all the pending asynchronous event
* @phba: pointer to lpfc hba data structure.
@@ -21705,6 +21705,116 @@ struct lpfc_io_buf *lpfc_get_io_buf(struct lpfc_hba *phba,
return lpfc_cmd;
}
+/**
+ * lpfc_read_object - Retrieve object data from HBA
+ * @phba: The HBA for which this call is being executed.
+ * @rdobject: Pathname of object data we want to read.
+ * @datap: Pointer to where data will be copied to.
+ * @datasz: size of data area
+ *
+ * This routine is limited to object sizes of LPFC_BPL_SIZE (1024) or less.
+ * The data will be truncated if datasz is not large enough.
+ * Version 1 is not supported with Embedded mbox cmd, so we must use version 0.
+ * Returns the actual bytes read from the object.
+ */
+int
+lpfc_read_object(struct lpfc_hba *phba, char *rdobject, uint32_t *datap,
+ uint32_t datasz)
+{
+ struct lpfc_mbx_read_object *read_object;
+ LPFC_MBOXQ_t *mbox;
+ int rc, length, eof, j, byte_cnt = 0;
+ uint32_t shdr_status, shdr_add_status;
+ union lpfc_sli4_cfg_shdr *shdr;
+ struct lpfc_dmabuf *pcmd;
+
+ /* sanity check on queue memory */
+ if (!datap)
+ return -ENODEV;
+
+ mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
+ if (!mbox)
+ return -ENOMEM;
+ length = (sizeof(struct lpfc_mbx_read_object) -
+ sizeof(struct lpfc_sli4_cfg_mhdr));
+ lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON,
+ LPFC_MBOX_OPCODE_READ_OBJECT,
+ length, LPFC_SLI4_MBX_EMBED);
+ read_object = &mbox->u.mqe.un.read_object;
+ shdr = (union lpfc_sli4_cfg_shdr *)&read_object->header.cfg_shdr;
+
+ bf_set(lpfc_mbox_hdr_version, &shdr->request, LPFC_Q_CREATE_VERSION_0);
+ bf_set(lpfc_mbx_rd_object_rlen, &read_object->u.request, datasz);
+ read_object->u.request.rd_object_offset = 0;
+ read_object->u.request.rd_object_cnt = 1;
+
+ memset((void *)read_object->u.request.rd_object_name, 0,
+ LPFC_OBJ_NAME_SZ);
+ sprintf((uint8_t *)read_object->u.request.rd_object_name, rdobject);
+ for (j = 0; j < strlen(rdobject); j++)
+ read_object->u.request.rd_object_name[j] =
+ cpu_to_le32(read_object->u.request.rd_object_name[j]);
+
+ pcmd = kmalloc(sizeof(*pcmd), GFP_KERNEL);
+ if (pcmd)
+ pcmd->virt = lpfc_mbuf_alloc(phba, MEM_PRI, &pcmd->phys);
+ if (!pcmd || !pcmd->virt) {
+ kfree(pcmd);
+ mempool_free(mbox, phba->mbox_mem_pool);
+ return -ENOMEM;
+ }
+ memset((void *)pcmd->virt, 0, LPFC_BPL_SIZE);
+ read_object->u.request.rd_object_hbuf[0].pa_lo =
+ putPaddrLow(pcmd->phys);
+ read_object->u.request.rd_object_hbuf[0].pa_hi =
+ putPaddrHigh(pcmd->phys);
+ read_object->u.request.rd_object_hbuf[0].length = LPFC_BPL_SIZE;
+
+ mbox->vport = phba->pport;
+ mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
+ mbox->ctx_buf = NULL;
+ mbox->ctx_ndlp = NULL;
+
+ rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
+ shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
+ shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
+
+ if (shdr_status == STATUS_FAILED &&
+ shdr_add_status == ADD_STATUS_INVALID_OBJECT_NAME) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_INIT | LOG_CGN_MGMT,
+ "4674 No port cfg file in FW.\n");
+ byte_cnt = -ENOENT;
+ } else if (shdr_status || shdr_add_status || rc) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_INIT | LOG_CGN_MGMT,
+ "2625 READ_OBJECT mailbox failed with "
+ "status x%x add_status x%x, mbx status x%x\n",
+ shdr_status, shdr_add_status, rc);
+ byte_cnt = -ENXIO;
+ } else {
+ /* Success */
+ length = read_object->u.response.rd_object_actual_rlen;
+ eof = bf_get(lpfc_mbx_rd_object_eof, &read_object->u.response);
+ lpfc_printf_log(phba, KERN_INFO, LOG_INIT | LOG_CGN_MGMT,
+ "2626 READ_OBJECT Success len %d:%d, EOF %d\n",
+ length, datasz, eof);
+
+ /* Detect the port config file exists but is empty */
+ if (!length && eof) {
+ byte_cnt = 0;
+ goto exit;
+ }
+
+ byte_cnt = length;
+ lpfc_sli_pcimem_bcopy(pcmd->virt, datap, byte_cnt);
+ }
+
+ exit:
+ lpfc_mbuf_free(phba, pcmd->virt, pcmd->phys);
+ kfree(pcmd);
+ mempool_free(mbox, phba->mbox_mem_pool);
+ return byte_cnt;
+}
+
/**
* lpfc_get_sgl_per_hdwq - Get one SGL chunk from hdwq's pool
* @phba: The HBA for which this call is being executed.