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path: root/drivers/scsi/mpt2sas/mpt2sas_base.c
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Diffstat (limited to 'drivers/scsi/mpt2sas/mpt2sas_base.c')
-rw-r--r--drivers/scsi/mpt2sas/mpt2sas_base.c152
1 files changed, 122 insertions, 30 deletions
diff --git a/drivers/scsi/mpt2sas/mpt2sas_base.c b/drivers/scsi/mpt2sas/mpt2sas_base.c
index 670241efa4b5..6422e258fd52 100644
--- a/drivers/scsi/mpt2sas/mpt2sas_base.c
+++ b/drivers/scsi/mpt2sas/mpt2sas_base.c
@@ -57,6 +57,7 @@
#include <linux/dma-mapping.h>
#include <linux/sort.h>
#include <linux/io.h>
+#include <linux/time.h>
#include "mpt2sas_base.h"
@@ -77,6 +78,44 @@ static int msix_disable = -1;
module_param(msix_disable, int, 0);
MODULE_PARM_DESC(msix_disable, " disable msix routed interrupts (default=0)");
+/* diag_buffer_enable is bitwise
+ * bit 0 set = TRACE
+ * bit 1 set = SNAPSHOT
+ * bit 2 set = EXTENDED
+ *
+ * Either bit can be set, or both
+ */
+static int diag_buffer_enable;
+module_param(diag_buffer_enable, int, 0);
+MODULE_PARM_DESC(diag_buffer_enable, " post diag buffers "
+ "(TRACE=1/SNAPSHOT=2/EXTENDED=4/default=0)");
+
+int mpt2sas_fwfault_debug;
+MODULE_PARM_DESC(mpt2sas_fwfault_debug, " enable detection of firmware fault "
+ "and halt firmware - (default=0)");
+
+/**
+ * _scsih_set_fwfault_debug - global setting of ioc->fwfault_debug.
+ *
+ */
+static int
+_scsih_set_fwfault_debug(const char *val, struct kernel_param *kp)
+{
+ int ret = param_set_int(val, kp);
+ struct MPT2SAS_ADAPTER *ioc;
+
+ if (ret)
+ return ret;
+
+ printk(KERN_INFO "setting logging_level(0x%08x)\n",
+ mpt2sas_fwfault_debug);
+ list_for_each_entry(ioc, &mpt2sas_ioc_list, list)
+ ioc->fwfault_debug = mpt2sas_fwfault_debug;
+ return 0;
+}
+module_param_call(mpt2sas_fwfault_debug, _scsih_set_fwfault_debug,
+ param_get_int, &mpt2sas_fwfault_debug, 0644);
+
/**
* _base_fault_reset_work - workq handling ioc fault conditions
* @work: input argument, used to derive ioc
@@ -121,7 +160,7 @@ _base_fault_reset_work(struct work_struct *work)
/**
* mpt2sas_base_start_watchdog - start the fault_reset_work_q
- * @ioc: pointer to scsi command object
+ * @ioc: per adapter object
* Context: sleep.
*
* Return nothing.
@@ -155,7 +194,7 @@ mpt2sas_base_start_watchdog(struct MPT2SAS_ADAPTER *ioc)
/**
* mpt2sas_base_stop_watchdog - stop the fault_reset_work_q
- * @ioc: pointer to scsi command object
+ * @ioc: per adapter object
* Context: sleep.
*
* Return nothing.
@@ -177,10 +216,55 @@ mpt2sas_base_stop_watchdog(struct MPT2SAS_ADAPTER *ioc)
}
}
+/**
+ * mpt2sas_base_fault_info - verbose translation of firmware FAULT code
+ * @ioc: per adapter object
+ * @fault_code: fault code
+ *
+ * Return nothing.
+ */
+void
+mpt2sas_base_fault_info(struct MPT2SAS_ADAPTER *ioc , u16 fault_code)
+{
+ printk(MPT2SAS_ERR_FMT "fault_state(0x%04x)!\n",
+ ioc->name, fault_code);
+}
+
+/**
+ * mpt2sas_halt_firmware - halt's mpt controller firmware
+ * @ioc: per adapter object
+ *
+ * For debugging timeout related issues. Writing 0xCOFFEE00
+ * to the doorbell register will halt controller firmware. With
+ * the purpose to stop both driver and firmware, the enduser can
+ * obtain a ring buffer from controller UART.
+ */
+void
+mpt2sas_halt_firmware(struct MPT2SAS_ADAPTER *ioc)
+{
+ u32 doorbell;
+
+ if (!ioc->fwfault_debug)
+ return;
+
+ dump_stack();
+
+ doorbell = readl(&ioc->chip->Doorbell);
+ if ((doorbell & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_FAULT)
+ mpt2sas_base_fault_info(ioc , doorbell);
+ else {
+ writel(0xC0FFEE00, &ioc->chip->Doorbell);
+ printk(MPT2SAS_ERR_FMT "Firmware is halted due to command "
+ "timeout\n", ioc->name);
+ }
+
+ panic("panic in %s\n", __func__);
+}
+
#ifdef CONFIG_SCSI_MPT2SAS_LOGGING
/**
* _base_sas_ioc_info - verbose translation of the ioc status
- * @ioc: pointer to scsi command object
+ * @ioc: per adapter object
* @mpi_reply: reply mf payload returned from firmware
* @request_hdr: request mf
*
@@ -394,7 +478,7 @@ _base_sas_ioc_info(struct MPT2SAS_ADAPTER *ioc, MPI2DefaultReply_t *mpi_reply,
/**
* _base_display_event_data - verbose translation of firmware asyn events
- * @ioc: pointer to scsi command object
+ * @ioc: per adapter object
* @mpi_reply: reply mf payload returned from firmware
*
* Return nothing.
@@ -474,7 +558,7 @@ _base_display_event_data(struct MPT2SAS_ADAPTER *ioc,
/**
* _base_sas_log_info - verbose translation of firmware log info
- * @ioc: pointer to scsi command object
+ * @ioc: per adapter object
* @log_info: log info
*
* Return nothing.
@@ -526,22 +610,8 @@ _base_sas_log_info(struct MPT2SAS_ADAPTER *ioc , u32 log_info)
}
/**
- * mpt2sas_base_fault_info - verbose translation of firmware FAULT code
- * @ioc: pointer to scsi command object
- * @fault_code: fault code
- *
- * Return nothing.
- */
-void
-mpt2sas_base_fault_info(struct MPT2SAS_ADAPTER *ioc , u16 fault_code)
-{
- printk(MPT2SAS_ERR_FMT "fault_state(0x%04x)!\n",
- ioc->name, fault_code);
-}
-
-/**
* _base_display_reply_info -
- * @ioc: pointer to scsi command object
+ * @ioc: per adapter object
* @smid: system request message index
* @msix_index: MSIX table index supplied by the OS
* @reply: reply message frame(lower 32bit addr)
@@ -570,7 +640,7 @@ _base_display_reply_info(struct MPT2SAS_ADAPTER *ioc, u16 smid, u8 msix_index,
/**
* mpt2sas_base_done - base internal command completion routine
- * @ioc: pointer to scsi command object
+ * @ioc: per adapter object
* @smid: system request message index
* @msix_index: MSIX table index supplied by the OS
* @reply: reply message frame(lower 32bit addr)
@@ -603,7 +673,7 @@ mpt2sas_base_done(struct MPT2SAS_ADAPTER *ioc, u16 smid, u8 msix_index,
/**
* _base_async_event - main callback handler for firmware asyn events
- * @ioc: pointer to scsi command object
+ * @ioc: per adapter object
* @msix_index: MSIX table index supplied by the OS
* @reply: reply message frame(lower 32bit addr)
*
@@ -684,7 +754,7 @@ _base_get_cb_idx(struct MPT2SAS_ADAPTER *ioc, u16 smid)
/**
* _base_mask_interrupts - disable interrupts
- * @ioc: pointer to scsi command object
+ * @ioc: per adapter object
*
* Disabling ResetIRQ, Reply and Doorbell Interrupts
*
@@ -704,7 +774,7 @@ _base_mask_interrupts(struct MPT2SAS_ADAPTER *ioc)
/**
* _base_unmask_interrupts - enable interrupts
- * @ioc: pointer to scsi command object
+ * @ioc: per adapter object
*
* Enabling only Reply Interrupts
*
@@ -1258,12 +1328,13 @@ mpt2sas_base_get_sense_buffer(struct MPT2SAS_ADAPTER *ioc, u16 smid)
* @ioc: per adapter object
* @smid: system request message index
*
- * Returns phys pointer to sense buffer.
+ * Returns phys pointer to the low 32bit address of the sense buffer.
*/
-dma_addr_t
+__le32
mpt2sas_base_get_sense_buffer_dma(struct MPT2SAS_ADAPTER *ioc, u16 smid)
{
- return ioc->sense_dma + ((smid - 1) * SCSI_SENSE_BUFFERSIZE);
+ return cpu_to_le32(ioc->sense_dma +
+ ((smid - 1) * SCSI_SENSE_BUFFERSIZE));
}
/**
@@ -1697,6 +1768,12 @@ _base_display_ioc_capabilities(struct MPT2SAS_ADAPTER *ioc)
}
if (ioc->facts.IOCCapabilities &
+ MPI2_IOCFACTS_CAPABILITY_EXTENDED_BUFFER) {
+ printk(KERN_INFO "%sDiag Extended Buffer", i ? "," : "");
+ i++;
+ }
+
+ if (ioc->facts.IOCCapabilities &
MPI2_IOCFACTS_CAPABILITY_TASK_SET_FULL_HANDLING) {
printk("%sTask Set Full", i ? "," : "");
i++;
@@ -2871,6 +2948,8 @@ _base_send_ioc_init(struct MPT2SAS_ADAPTER *ioc, int sleep_flag)
Mpi2IOCInitRequest_t mpi_request;
Mpi2IOCInitReply_t mpi_reply;
int r;
+ struct timeval current_time;
+ u16 ioc_status;
dinitprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s\n", ioc->name,
__func__));
@@ -2921,6 +3000,13 @@ _base_send_ioc_init(struct MPT2SAS_ADAPTER *ioc, int sleep_flag)
cpu_to_le32(ioc->reply_post_free_dma);
#endif
+ /* This time stamp specifies number of milliseconds
+ * since epoch ~ midnight January 1, 1970.
+ */
+ do_gettimeofday(&current_time);
+ mpi_request.TimeStamp = (current_time.tv_sec * 1000) +
+ (current_time.tv_usec >> 3);
+
if (ioc->logging_level & MPT_DEBUG_INIT) {
u32 *mfp;
int i;
@@ -2943,7 +3029,8 @@ _base_send_ioc_init(struct MPT2SAS_ADAPTER *ioc, int sleep_flag)
return r;
}
- if (mpi_reply.IOCStatus != MPI2_IOCSTATUS_SUCCESS ||
+ ioc_status = le16_to_cpu(mpi_reply.IOCStatus) & MPI2_IOCSTATUS_MASK;
+ if (ioc_status != MPI2_IOCSTATUS_SUCCESS ||
mpi_reply.IOCLogInfo) {
printk(MPT2SAS_ERR_FMT "%s: failed\n", ioc->name, __func__);
r = -EIO;
@@ -3461,11 +3548,11 @@ mpt2sas_base_attach(struct MPT2SAS_ADAPTER *ioc)
return r;
pci_set_drvdata(ioc->pdev, ioc->shost);
- r = _base_make_ioc_ready(ioc, CAN_SLEEP, SOFT_RESET);
+ r = _base_get_ioc_facts(ioc, CAN_SLEEP);
if (r)
goto out_free_resources;
- r = _base_get_ioc_facts(ioc, CAN_SLEEP);
+ r = _base_make_ioc_ready(ioc, CAN_SLEEP, SOFT_RESET);
if (r)
goto out_free_resources;
@@ -3531,6 +3618,8 @@ mpt2sas_base_attach(struct MPT2SAS_ADAPTER *ioc)
goto out_free_resources;
mpt2sas_base_start_watchdog(ioc);
+ if (diag_buffer_enable != 0)
+ mpt2sas_enable_diag_buffer(ioc, diag_buffer_enable);
return 0;
out_free_resources:
@@ -3684,6 +3773,9 @@ mpt2sas_base_hard_reset_handler(struct MPT2SAS_ADAPTER *ioc, int sleep_flag,
dtmprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: enter\n", ioc->name,
__func__));
+ if (mpt2sas_fwfault_debug)
+ mpt2sas_halt_firmware(ioc);
+
spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags);
if (ioc->shost_recovery) {
spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags);