From a0c87cbdb52467a16343b31251f2722643db603c Mon Sep 17 00:00:00 2001 From: James Smart Date: Sun, 19 Jul 2009 10:01:10 -0400 Subject: [SCSI] lpfc 8.3.4: Consistently Implement persistent port disable Consistently implement persistent port disable. Ability was to be managed in the adapter via firmware via flash settings. However, not all firmware images supported it. Uniformly support it everywhere. Signed-off-by: James Smart Signed-off-by: James Bottomley Signed-off-by: James Bottomley --- drivers/scsi/lpfc/lpfc_sli.c | 158 ++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 157 insertions(+), 1 deletion(-) (limited to 'drivers/scsi/lpfc/lpfc_sli.c') diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c index 04f527ca8f5f..a3f85454368d 100644 --- a/drivers/scsi/lpfc/lpfc_sli.c +++ b/drivers/scsi/lpfc/lpfc_sli.c @@ -4139,7 +4139,7 @@ lpfc_sli4_read_fcoe_params(struct lpfc_hba *phba, return -EIO; } data_length = mqe->un.mb_words[5]; - if (data_length > DMP_FCOEPARAM_RGN_SIZE) { + if (data_length > DMP_RGN23_SIZE) { lpfc_mbuf_free(phba, mp->virt, mp->phys); kfree(mp); return -EIO; @@ -6788,6 +6788,33 @@ lpfc_sli_pcimem_bcopy(void *srcp, void *destp, uint32_t cnt) } +/** + * lpfc_sli_bemem_bcopy - SLI memory copy function + * @srcp: Source memory pointer. + * @destp: Destination memory pointer. + * @cnt: Number of words required to be copied. + * + * This function is used for copying data between a data structure + * with big endian representation to local endianness. + * This function can be called with or without lock. + **/ +void +lpfc_sli_bemem_bcopy(void *srcp, void *destp, uint32_t cnt) +{ + uint32_t *src = srcp; + uint32_t *dest = destp; + uint32_t ldata; + int i; + + for (i = 0; i < (int)cnt; i += sizeof(uint32_t)) { + ldata = *src; + ldata = be32_to_cpu(ldata); + *dest = ldata; + src++; + dest++; + } +} + /** * lpfc_sli_ringpostbuf_put - Function to add a buffer to postbufq * @phba: Pointer to HBA context object. @@ -11564,3 +11591,132 @@ lpfc_sli4_read_fcf_record(struct lpfc_hba *phba, uint16_t fcf_index) error = 0; return error; } + +/** + * lpfc_sli_read_link_ste - Read region 23 to decide if link is disabled. + * @phba: pointer to lpfc hba data structure. + * + * This function read region 23 and parse TLV for port status to + * decide if the user disaled the port. If the TLV indicates the + * port is disabled, the hba_flag is set accordingly. + **/ +void +lpfc_sli_read_link_ste(struct lpfc_hba *phba) +{ + LPFC_MBOXQ_t *pmb = NULL; + MAILBOX_t *mb; + uint8_t *rgn23_data = NULL; + uint32_t offset = 0, data_size, sub_tlv_len, tlv_offset; + int rc; + + pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); + if (!pmb) { + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "2600 lpfc_sli_read_serdes_param failed to" + " allocate mailbox memory\n"); + goto out; + } + mb = &pmb->u.mb; + + /* Get adapter Region 23 data */ + rgn23_data = kzalloc(DMP_RGN23_SIZE, GFP_KERNEL); + if (!rgn23_data) + goto out; + + do { + lpfc_dump_mem(phba, pmb, offset, DMP_REGION_23); + rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL); + + if (rc != MBX_SUCCESS) { + lpfc_printf_log(phba, KERN_INFO, LOG_INIT, + "2601 lpfc_sli_read_link_ste failed to" + " read config region 23 rc 0x%x Status 0x%x\n", + rc, mb->mbxStatus); + mb->un.varDmp.word_cnt = 0; + } + /* + * dump mem may return a zero when finished or we got a + * mailbox error, either way we are done. + */ + if (mb->un.varDmp.word_cnt == 0) + break; + if (mb->un.varDmp.word_cnt > DMP_RGN23_SIZE - offset) + mb->un.varDmp.word_cnt = DMP_RGN23_SIZE - offset; + + lpfc_sli_pcimem_bcopy(((uint8_t *)mb) + DMP_RSP_OFFSET, + rgn23_data + offset, + mb->un.varDmp.word_cnt); + offset += mb->un.varDmp.word_cnt; + } while (mb->un.varDmp.word_cnt && offset < DMP_RGN23_SIZE); + + data_size = offset; + offset = 0; + + if (!data_size) + goto out; + + /* Check the region signature first */ + if (memcmp(&rgn23_data[offset], LPFC_REGION23_SIGNATURE, 4)) { + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "2619 Config region 23 has bad signature\n"); + goto out; + } + offset += 4; + + /* Check the data structure version */ + if (rgn23_data[offset] != LPFC_REGION23_VERSION) { + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "2620 Config region 23 has bad version\n"); + goto out; + } + offset += 4; + + /* Parse TLV entries in the region */ + while (offset < data_size) { + if (rgn23_data[offset] == LPFC_REGION23_LAST_REC) + break; + /* + * If the TLV is not driver specific TLV or driver id is + * not linux driver id, skip the record. + */ + if ((rgn23_data[offset] != DRIVER_SPECIFIC_TYPE) || + (rgn23_data[offset + 2] != LINUX_DRIVER_ID) || + (rgn23_data[offset + 3] != 0)) { + offset += rgn23_data[offset + 1] * 4 + 4; + continue; + } + + /* Driver found a driver specific TLV in the config region */ + sub_tlv_len = rgn23_data[offset + 1] * 4; + offset += 4; + tlv_offset = 0; + + /* + * Search for configured port state sub-TLV. + */ + while ((offset < data_size) && + (tlv_offset < sub_tlv_len)) { + if (rgn23_data[offset] == LPFC_REGION23_LAST_REC) { + offset += 4; + tlv_offset += 4; + break; + } + if (rgn23_data[offset] != PORT_STE_TYPE) { + offset += rgn23_data[offset + 1] * 4 + 4; + tlv_offset += rgn23_data[offset + 1] * 4 + 4; + continue; + } + + /* This HBA contains PORT_STE configured */ + if (!rgn23_data[offset + 2]) + phba->hba_flag |= LINK_DISABLED; + + goto out; + } + } +out: + if (pmb) + mempool_free(pmb, phba->mbox_mem_pool); + kfree(rgn23_data); + return; +} -- cgit v1.2.3-55-g7522