From a6cb3d012b983b350ae3892cff2e692665df0e1e Mon Sep 17 00:00:00 2001 From: Sakthivel K Date: Tue, 19 Mar 2013 18:08:40 +0530 Subject: [PATCH] [SCSI] pm80xx: thermal, sas controller config and error handling update Modified thermal configuration to happen after interrupt registration Added SAS controller configuration during initialization Added error handling logic to handle I_T_Nexus errors and variants [jejb: fix up tabs and spaces issues] Signed-off-by: Anand Kumar S Acked-by: Jack Wang Reviewed-by: Hannes Reinecke Signed-off-by: James Bottomley --- drivers/scsi/pm8001/pm8001_hwi.c | 2 +- drivers/scsi/pm8001/pm8001_init.c | 2 + drivers/scsi/pm8001/pm8001_sas.c | 66 +++++++++++++ drivers/scsi/pm8001/pm8001_sas.h | 2 + drivers/scsi/pm8001/pm80xx_hwi.c | 150 +++++++++++++++++++++++++++--- drivers/scsi/pm8001/pm80xx_hwi.h | 44 ++++++++- 6 files changed, 249 insertions(+), 17 deletions(-) diff --git a/drivers/scsi/pm8001/pm8001_hwi.c b/drivers/scsi/pm8001/pm8001_hwi.c index dbdd9d386f10..95d04cc78c0b 100644 --- a/drivers/scsi/pm8001/pm8001_hwi.c +++ b/drivers/scsi/pm8001/pm8001_hwi.c @@ -1670,7 +1670,7 @@ void pm8001_work_fn(struct work_struct *work) } break; case IO_OPEN_CNX_ERROR_IT_NEXUS_LOSS: dev = pm8001_dev->sas_device; - pm8001_I_T_nexus_reset(dev); + pm8001_I_T_nexus_event_handler(dev); break; case IO_OPEN_CNX_ERROR_STP_RESOURCES_BUSY: dev = pm8001_dev->sas_device; diff --git a/drivers/scsi/pm8001/pm8001_init.c b/drivers/scsi/pm8001/pm8001_init.c index 055f7d0e15d8..1c718520036a 100644 --- a/drivers/scsi/pm8001/pm8001_init.c +++ b/drivers/scsi/pm8001/pm8001_init.c @@ -838,6 +838,8 @@ static int pm8001_pci_probe(struct pci_dev *pdev, if (pm8001_ha->chip_id != chip_8001) { for (i = 1; i < pm8001_ha->number_of_intr; i++) PM8001_CHIP_DISP->interrupt_enable(pm8001_ha, i); + /* setup thermal configuration. */ + pm80xx_set_thermal_config(pm8001_ha); } pm8001_init_sas_add(pm8001_ha); diff --git a/drivers/scsi/pm8001/pm8001_sas.c b/drivers/scsi/pm8001/pm8001_sas.c index c720917d1388..9af95853f840 100644 --- a/drivers/scsi/pm8001/pm8001_sas.c +++ b/drivers/scsi/pm8001/pm8001_sas.c @@ -1018,6 +1018,72 @@ int pm8001_I_T_nexus_reset(struct domain_device *dev) return rc; } +/* +* This function handle the IT_NEXUS_XXX event or completion +* status code for SSP/SATA/SMP I/O request. +*/ +int pm8001_I_T_nexus_event_handler(struct domain_device *dev) +{ + int rc = TMF_RESP_FUNC_FAILED; + struct pm8001_device *pm8001_dev; + struct pm8001_hba_info *pm8001_ha; + struct sas_phy *phy; + u32 device_id = 0; + + if (!dev || !dev->lldd_dev) + return -1; + + pm8001_dev = dev->lldd_dev; + device_id = pm8001_dev->device_id; + pm8001_ha = pm8001_find_ha_by_dev(dev); + + PM8001_EH_DBG(pm8001_ha, + pm8001_printk("I_T_Nexus handler invoked !!")); + + phy = sas_get_local_phy(dev); + + if (dev_is_sata(dev)) { + DECLARE_COMPLETION_ONSTACK(completion_setstate); + if (scsi_is_sas_phy_local(phy)) { + rc = 0; + goto out; + } + /* send internal ssp/sata/smp abort command to FW */ + rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev , + dev, 1, 0); + msleep(100); + + /* deregister the target device */ + pm8001_dev_gone_notify(dev); + msleep(200); + + /*send phy reset to hard reset target */ + rc = sas_phy_reset(phy, 1); + msleep(2000); + pm8001_dev->setds_completion = &completion_setstate; + + wait_for_completion(&completion_setstate); + } else { + /* send internal ssp/sata/smp abort command to FW */ + rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev , + dev, 1, 0); + msleep(100); + + /* deregister the target device */ + pm8001_dev_gone_notify(dev); + msleep(200); + + /*send phy reset to hard reset target */ + rc = sas_phy_reset(phy, 1); + msleep(2000); + } + PM8001_EH_DBG(pm8001_ha, pm8001_printk(" for device[%x]:rc=%d\n", + pm8001_dev->device_id, rc)); +out: + sas_put_local_phy(phy); + + return rc; +} /* mandatory SAM-3, the task reset the specified LUN*/ int pm8001_lu_reset(struct domain_device *dev, u8 *lun) { diff --git a/drivers/scsi/pm8001/pm8001_sas.h b/drivers/scsi/pm8001/pm8001_sas.h index ab30193f235f..72d46ea398dc 100644 --- a/drivers/scsi/pm8001/pm8001_sas.h +++ b/drivers/scsi/pm8001/pm8001_sas.h @@ -563,6 +563,7 @@ int pm8001_dev_found(struct domain_device *dev); void pm8001_dev_gone(struct domain_device *dev); int pm8001_lu_reset(struct domain_device *dev, u8 *lun); int pm8001_I_T_nexus_reset(struct domain_device *dev); +int pm8001_I_T_nexus_event_handler(struct domain_device *dev); int pm8001_query_task(struct sas_task *task); void pm8001_open_reject_retry( struct pm8001_hba_info *pm8001_ha, @@ -625,6 +626,7 @@ void pm8001_free_task(struct sas_task *task); void pm8001_tag_free(struct pm8001_hba_info *pm8001_ha, u32 tag); struct pm8001_device *pm8001_find_dev(struct pm8001_hba_info *pm8001_ha, u32 device_id); +int pm80xx_set_thermal_config(struct pm8001_hba_info *pm8001_ha); int pm8001_bar4_shift(struct pm8001_hba_info *pm8001_ha, u32 shiftValue); diff --git a/drivers/scsi/pm8001/pm80xx_hwi.c b/drivers/scsi/pm8001/pm80xx_hwi.c index f0dbe79b049c..670998a8ca79 100644 --- a/drivers/scsi/pm8001/pm80xx_hwi.c +++ b/drivers/scsi/pm8001/pm80xx_hwi.c @@ -613,7 +613,7 @@ static void init_pci_device_addresses(struct pm8001_hba_info *pm8001_ha) * pm80xx_set_thermal_config - support the thermal configuration * @pm8001_ha: our hba card information. */ -static int +int pm80xx_set_thermal_config(struct pm8001_hba_info *pm8001_ha) { struct set_ctrl_cfg_req payload; @@ -638,6 +638,86 @@ pm80xx_set_thermal_config(struct pm8001_hba_info *pm8001_ha) } +/** +* pm80xx_set_sas_protocol_timer_config - support the SAS Protocol +* Timer configuration page +* @pm8001_ha: our hba card information. +*/ +static int +pm80xx_set_sas_protocol_timer_config(struct pm8001_hba_info *pm8001_ha) +{ + struct set_ctrl_cfg_req payload; + struct inbound_queue_table *circularQ; + SASProtocolTimerConfig_t SASConfigPage; + int rc; + u32 tag; + u32 opc = OPC_INB_SET_CONTROLLER_CONFIG; + + memset(&payload, 0, sizeof(struct set_ctrl_cfg_req)); + memset(&SASConfigPage, 0, sizeof(SASProtocolTimerConfig_t)); + + rc = pm8001_tag_alloc(pm8001_ha, &tag); + + if (rc) + return -1; + + circularQ = &pm8001_ha->inbnd_q_tbl[0]; + payload.tag = cpu_to_le32(tag); + + SASConfigPage.pageCode = SAS_PROTOCOL_TIMER_CONFIG_PAGE; + SASConfigPage.MST_MSI = 3 << 15; + SASConfigPage.STP_SSP_MCT_TMO = (STP_MCT_TMO << 16) | SSP_MCT_TMO; + SASConfigPage.STP_FRM_TMO = (SAS_MAX_OPEN_TIME << 24) | + (SMP_MAX_CONN_TIMER << 16) | STP_FRM_TIMER; + SASConfigPage.STP_IDLE_TMO = STP_IDLE_TIME; + + if (SASConfigPage.STP_IDLE_TMO > 0x3FFFFFF) + SASConfigPage.STP_IDLE_TMO = 0x3FFFFFF; + + + SASConfigPage.OPNRJT_RTRY_INTVL = (SAS_MFD << 16) | + SAS_OPNRJT_RTRY_INTVL; + SASConfigPage.Data_Cmd_OPNRJT_RTRY_TMO = (SAS_DOPNRJT_RTRY_TMO << 16) + | SAS_COPNRJT_RTRY_TMO; + SASConfigPage.Data_Cmd_OPNRJT_RTRY_THR = (SAS_DOPNRJT_RTRY_THR << 16) + | SAS_COPNRJT_RTRY_THR; + SASConfigPage.MAX_AIP = SAS_MAX_AIP; + + PM8001_INIT_DBG(pm8001_ha, + pm8001_printk("SASConfigPage.pageCode " + "0x%08x\n", SASConfigPage.pageCode)); + PM8001_INIT_DBG(pm8001_ha, + pm8001_printk("SASConfigPage.MST_MSI " + " 0x%08x\n", SASConfigPage.MST_MSI)); + PM8001_INIT_DBG(pm8001_ha, + pm8001_printk("SASConfigPage.STP_SSP_MCT_TMO " + " 0x%08x\n", SASConfigPage.STP_SSP_MCT_TMO)); + PM8001_INIT_DBG(pm8001_ha, + pm8001_printk("SASConfigPage.STP_FRM_TMO " + " 0x%08x\n", SASConfigPage.STP_FRM_TMO)); + PM8001_INIT_DBG(pm8001_ha, + pm8001_printk("SASConfigPage.STP_IDLE_TMO " + " 0x%08x\n", SASConfigPage.STP_IDLE_TMO)); + PM8001_INIT_DBG(pm8001_ha, + pm8001_printk("SASConfigPage.OPNRJT_RTRY_INTVL " + " 0x%08x\n", SASConfigPage.OPNRJT_RTRY_INTVL)); + PM8001_INIT_DBG(pm8001_ha, + pm8001_printk("SASConfigPage.Data_Cmd_OPNRJT_RTRY_TMO " + " 0x%08x\n", SASConfigPage.Data_Cmd_OPNRJT_RTRY_TMO)); + PM8001_INIT_DBG(pm8001_ha, + pm8001_printk("SASConfigPage.Data_Cmd_OPNRJT_RTRY_THR " + " 0x%08x\n", SASConfigPage.Data_Cmd_OPNRJT_RTRY_THR)); + PM8001_INIT_DBG(pm8001_ha, pm8001_printk("SASConfigPage.MAX_AIP " + " 0x%08x\n", SASConfigPage.MAX_AIP)); + + memcpy(&payload.cfg_pg, &SASConfigPage, + sizeof(SASProtocolTimerConfig_t)); + + rc = pm8001_mpi_build_cmd(pm8001_ha, circularQ, opc, &payload, 0); + + return rc; +} + /** * pm80xx_get_encrypt_info - Check for encryption * @pm8001_ha: our hba card information. @@ -800,11 +880,8 @@ static int pm80xx_chip_init(struct pm8001_hba_info *pm8001_ha) } else return -EBUSY; - /* configure thermal */ - pm80xx_set_thermal_config(pm8001_ha); - - PM8001_INIT_DBG(pm8001_ha, - pm8001_printk("Thermal configuration successful!\n")); + /* send SAS protocol timer configuration page to FW */ + ret = pm80xx_set_sas_protocol_timer_config(pm8001_ha); /* Check for encryption */ if (pm8001_ha->chip->encrypt) { @@ -1269,6 +1346,11 @@ mpi_ssp_completion(struct pm8001_hba_info *pm8001_ha , void *piomb) ts->open_rej_reason = SAS_OREJ_RSVD_RETRY; break; case IO_OPEN_CNX_ERROR_IT_NEXUS_LOSS: + case IO_XFER_OPEN_RETRY_BACKOFF_THRESHOLD_REACHED: + case IO_OPEN_CNX_ERROR_IT_NEXUS_LOSS_OPEN_TMO: + case IO_OPEN_CNX_ERROR_IT_NEXUS_LOSS_NO_DEST: + case IO_OPEN_CNX_ERROR_IT_NEXUS_LOSS_OPEN_COLLIDE: + case IO_OPEN_CNX_ERROR_IT_NEXUS_LOSS_PATHWAY_BLOCKED: PM8001_IO_DBG(pm8001_ha, pm8001_printk("IO_OPEN_CNX_ERROR_IT_NEXUS_LOSS\n")); ts->resp = SAS_TASK_COMPLETE; @@ -1472,6 +1554,11 @@ static void mpi_ssp_event(struct pm8001_hba_info *pm8001_ha , void *piomb) ts->open_rej_reason = SAS_OREJ_RSVD_RETRY; break; case IO_OPEN_CNX_ERROR_IT_NEXUS_LOSS: + case IO_XFER_OPEN_RETRY_BACKOFF_THRESHOLD_REACHED: + case IO_OPEN_CNX_ERROR_IT_NEXUS_LOSS_OPEN_TMO: + case IO_OPEN_CNX_ERROR_IT_NEXUS_LOSS_NO_DEST: + case IO_OPEN_CNX_ERROR_IT_NEXUS_LOSS_OPEN_COLLIDE: + case IO_OPEN_CNX_ERROR_IT_NEXUS_LOSS_PATHWAY_BLOCKED: PM8001_IO_DBG(pm8001_ha, pm8001_printk("IO_OPEN_CNX_ERROR_IT_NEXUS_LOSS\n")); ts->resp = SAS_TASK_COMPLETE; @@ -1557,6 +1644,13 @@ static void mpi_ssp_event(struct pm8001_hba_info *pm8001_ha , void *piomb) ts->resp = SAS_TASK_COMPLETE; ts->stat = SAS_DATA_OVERRUN; break; + case IO_XFER_ERROR_INTERNAL_CRC_ERROR: + PM8001_IO_DBG(pm8001_ha, + pm8001_printk("IO_XFR_ERROR_INTERNAL_CRC_ERROR\n")); + /* TBC: used default set values */ + ts->resp = SAS_TASK_COMPLETE; + ts->stat = SAS_DATA_OVERRUN; + break; case IO_XFER_CMD_FRAME_ISSUED: PM8001_IO_DBG(pm8001_ha, pm8001_printk("IO_XFER_CMD_FRAME_ISSUED\n")); @@ -1761,6 +1855,11 @@ mpi_sata_completion(struct pm8001_hba_info *pm8001_ha, void *piomb) ts->open_rej_reason = SAS_OREJ_RSVD_CONT0; break; case IO_OPEN_CNX_ERROR_IT_NEXUS_LOSS: + case IO_XFER_OPEN_RETRY_BACKOFF_THRESHOLD_REACHED: + case IO_OPEN_CNX_ERROR_IT_NEXUS_LOSS_OPEN_TMO: + case IO_OPEN_CNX_ERROR_IT_NEXUS_LOSS_NO_DEST: + case IO_OPEN_CNX_ERROR_IT_NEXUS_LOSS_OPEN_COLLIDE: + case IO_OPEN_CNX_ERROR_IT_NEXUS_LOSS_PATHWAY_BLOCKED: PM8001_IO_DBG(pm8001_ha, pm8001_printk("IO_OPEN_CNX_ERROR_IT_NEXUS_LOSS\n")); ts->resp = SAS_TASK_COMPLETE; @@ -2051,7 +2150,12 @@ static void mpi_sata_event(struct pm8001_hba_info *pm8001_ha , void *piomb) ts->open_rej_reason = SAS_OREJ_RSVD_CONT0; break; case IO_OPEN_CNX_ERROR_IT_NEXUS_LOSS: - PM8001_IO_DBG(pm8001_ha, + case IO_XFER_OPEN_RETRY_BACKOFF_THRESHOLD_REACHED: + case IO_OPEN_CNX_ERROR_IT_NEXUS_LOSS_OPEN_TMO: + case IO_OPEN_CNX_ERROR_IT_NEXUS_LOSS_NO_DEST: + case IO_OPEN_CNX_ERROR_IT_NEXUS_LOSS_OPEN_COLLIDE: + case IO_OPEN_CNX_ERROR_IT_NEXUS_LOSS_PATHWAY_BLOCKED: + PM8001_FAIL_DBG(pm8001_ha, pm8001_printk("IO_OPEN_CNX_ERROR_IT_NEXUS_LOSS\n")); ts->resp = SAS_TASK_UNDELIVERED; ts->stat = SAS_DEV_NO_RESPONSE; @@ -2154,6 +2258,20 @@ static void mpi_sata_event(struct pm8001_hba_info *pm8001_ha , void *piomb) ts->resp = SAS_TASK_COMPLETE; ts->stat = SAS_OPEN_TO; break; + case IO_XFER_ERROR_INTERNAL_CRC_ERROR: + PM8001_FAIL_DBG(pm8001_ha, + pm8001_printk("IO_XFR_ERROR_INTERNAL_CRC_ERROR\n")); + /* TBC: used default set values */ + ts->resp = SAS_TASK_COMPLETE; + ts->stat = SAS_OPEN_TO; + break; + case IO_XFER_DMA_ACTIVATE_TIMEOUT: + PM8001_FAIL_DBG(pm8001_ha, + pm8001_printk("IO_XFR_DMA_ACTIVATE_TIMEOUT\n")); + /* TBC: used default set values */ + ts->resp = SAS_TASK_COMPLETE; + ts->stat = SAS_OPEN_TO; + break; default: PM8001_IO_DBG(pm8001_ha, pm8001_printk("Unknown status 0x%x\n", event)); @@ -2305,6 +2423,11 @@ mpi_smp_completion(struct pm8001_hba_info *pm8001_ha, void *piomb) ts->open_rej_reason = SAS_OREJ_RSVD_CONT0; break; case IO_OPEN_CNX_ERROR_IT_NEXUS_LOSS: + case IO_XFER_OPEN_RETRY_BACKOFF_THRESHOLD_REACHED: + case IO_OPEN_CNX_ERROR_IT_NEXUS_LOSS_OPEN_TMO: + case IO_OPEN_CNX_ERROR_IT_NEXUS_LOSS_NO_DEST: + case IO_OPEN_CNX_ERROR_IT_NEXUS_LOSS_OPEN_COLLIDE: + case IO_OPEN_CNX_ERROR_IT_NEXUS_LOSS_PATHWAY_BLOCKED: PM8001_IO_DBG(pm8001_ha, pm8001_printk("IO_OPEN_CNX_ERROR_IT_NEXUS_LOSS\n")); ts->resp = SAS_TASK_COMPLETE; @@ -2862,6 +2985,9 @@ static int mpi_hw_event(struct pm8001_hba_info *pm8001_ha, void *piomb) case HW_EVENT_PORT_RECOVERY_TIMER_TMO: PM8001_MSG_DBG(pm8001_ha, pm8001_printk("HW_EVENT_PORT_RECOVERY_TIMER_TMO\n")); + pm80xx_hw_event_ack_req(pm8001_ha, 0, + HW_EVENT_PORT_RECOVERY_TIMER_TMO, + port_id, phy_id, 0, 0); sas_phy_disconnected(sas_phy); phy->phy_attached = 0; sas_ha->notify_port_event(sas_phy, PORTE_LINK_RESET_ERR); @@ -3499,10 +3625,7 @@ static int pm80xx_chip_ssp_io_req(struct pm8001_hba_info *pm8001_ha, ssp_cmd.ssp_iu.efb_prio_attr |= (task->ssp_task.task_prio << 3); ssp_cmd.ssp_iu.efb_prio_attr |= (task->ssp_task.task_attr & 7); memcpy(ssp_cmd.ssp_iu.cdb, task->ssp_task.cdb, 16); - circularQ = &pm8001_ha->inbnd_q_tbl[inb++]; - - /* rotate the inb queue */ - inb = inb%PM8001_MAX_SPCV_INB_NUM; + circularQ = &pm8001_ha->inbnd_q_tbl[0]; /* Check if encryption is set */ if (pm8001_ha->chip->encrypt && @@ -3603,10 +3726,7 @@ static int pm80xx_chip_sata_req(struct pm8001_hba_info *pm8001_ha, unsigned long flags; u32 opc = OPC_INB_SATA_HOST_OPSTART; memset(&sata_cmd, 0, sizeof(sata_cmd)); - circularQ = &pm8001_ha->inbnd_q_tbl[inb++]; - - /* rotate the inb queue */ - inb = inb%PM8001_MAX_SPCV_INB_NUM; + circularQ = &pm8001_ha->inbnd_q_tbl[0]; if (task->data_dir == PCI_DMA_NONE) { ATAP = 0x04; /* no data*/ diff --git a/drivers/scsi/pm8001/pm80xx_hwi.h b/drivers/scsi/pm8001/pm80xx_hwi.h index b7c864f16402..2b760ba75d7b 100644 --- a/drivers/scsi/pm8001/pm80xx_hwi.h +++ b/drivers/scsi/pm8001/pm80xx_hwi.h @@ -197,6 +197,30 @@ #define CIPHER_MODE_XTS 0x00000002 #define KEK_MGMT_SUBOP_KEYCARDUPDATE 0x4 +/* SAS protocol timer configuration page */ +#define SAS_PROTOCOL_TIMER_CONFIG_PAGE 0x04 +#define STP_MCT_TMO 32 +#define SSP_MCT_TMO 32 +#define SAS_MAX_OPEN_TIME 5 +#define SMP_MAX_CONN_TIMER 0xFF +#define STP_FRM_TIMER 0 +#define STP_IDLE_TIME 5 /* 5 us; controller default */ +#define SAS_MFD 0 +#define SAS_OPNRJT_RTRY_INTVL 2 +#define SAS_DOPNRJT_RTRY_TMO 128 +#define SAS_COPNRJT_RTRY_TMO 128 + +/* + Making ORR bigger than IT NEXUS LOSS which is 2000000us = 2 second. + Assuming a bigger value 3 second, 3000000/128 = 23437.5 where 128 + is DOPNRJT_RTRY_TMO +*/ +#define SAS_DOPNRJT_RTRY_THR 23438 +#define SAS_COPNRJT_RTRY_THR 23438 +#define SAS_MAX_AIP 0x200000 +#define IT_NEXUS_TIMEOUT 0x7D0 +#define PORT_RECOVERY_TIMEOUT ((IT_NEXUS_TIMEOUT/100) + 30) + struct mpi_msg_hdr { __le32 header; /* Bits [11:0] - Message operation code */ /* Bits [15:12] - Message Category */ @@ -996,6 +1020,23 @@ struct ssp_coalesced_comp_resp { /* new outbound structure for spcv - ends */ +/* brief data structure for SAS protocol timer configuration page. + * + */ +struct SASProtocolTimerConfig { + __le32 pageCode; /* 0 */ + __le32 MST_MSI; /* 1 */ + __le32 STP_SSP_MCT_TMO; /* 2 */ + __le32 STP_FRM_TMO; /* 3 */ + __le32 STP_IDLE_TMO; /* 4 */ + __le32 OPNRJT_RTRY_INTVL; /* 5 */ + __le32 Data_Cmd_OPNRJT_RTRY_TMO; /* 6 */ + __le32 Data_Cmd_OPNRJT_RTRY_THR; /* 7 */ + __le32 MAX_AIP; /* 8 */ +} __attribute__((packed, aligned(4))); + +typedef struct SASProtocolTimerConfig SASProtocolTimerConfig_t; + #define NDS_BITS 0x0F #define PDS_BITS 0xF0 @@ -1122,7 +1163,8 @@ struct ssp_coalesced_comp_resp { #define IO_DS_INVALID 0x49 /* WARNING: the value is not contiguous from here */ #define IO_XFER_ERR_LAST_PIO_DATAIN_CRC_ERR 0x52 -#define IO_XFR_ERROR_INTERNAL_CRC_ERROR 0x54 +#define IO_XFER_DMA_ACTIVATE_TIMEOUT 0x53 +#define IO_XFER_ERROR_INTERNAL_CRC_ERROR 0x54 #define MPI_IO_RQE_BUSY_FULL 0x55 #define IO_XFER_ERR_EOB_DATA_OVERRUN 0x56 #define IO_XFR_ERROR_INVALID_SSP_RSP_FRAME 0x57 -- GitLab