* mpt3sas_atto_get_sas_addr - get the ATTO SAS address from mfg page 1
*
* @ioc : per adapter object
- * @*sas_addr : return sas address
+ * @sas_addr : return sas address
* Return: 0 for success, non-zero for failure.
*/
static int
}
/**
- * _base_diag_reset - the "big hammer" start of day reset
- * @ioc: per adapter object
- *
- * Return: 0 for success, non-zero for failure.
- */
-static int
-_base_diag_reset(struct MPT3SAS_ADAPTER *ioc)
-{
- u32 host_diagnostic;
- u32 ioc_state;
- u32 count;
- u32 hcb_size;
-
- ioc_info(ioc, "sending diag reset !!\n");
-
- pci_cfg_access_lock(ioc->pdev);
+* mpt3sas_base_unlock_and_get_host_diagnostic- enable Host Diagnostic Register writes
+* @ioc: per adapter object
+* @host_diagnostic: host diagnostic register content
+*
+* Return: 0 for success, non-zero for failure.
+*/
- drsprintk(ioc, ioc_info(ioc, "clear interrupts\n"));
+int
+mpt3sas_base_unlock_and_get_host_diagnostic(struct MPT3SAS_ADAPTER *ioc,
+ u32 *host_diagnostic)
+{
+ u32 count;
+ *host_diagnostic = 0;
count = 0;
+
do {
/* Write magic sequence to WriteSequence register
* Loop until in diagnostic mode
if (count++ > 20) {
ioc_info(ioc,
- "Stop writing magic sequence after 20 retries\n");
+ "Stop writing magic sequence after 20 retries\n");
_base_dump_reg_set(ioc);
- goto out;
+ return -EFAULT;
}
- host_diagnostic = ioc->base_readl_ext_retry(&ioc->chip->HostDiagnostic);
+ *host_diagnostic = ioc->base_readl_ext_retry(&ioc->chip->HostDiagnostic);
drsprintk(ioc,
- ioc_info(ioc, "wrote magic sequence: count(%d), host_diagnostic(0x%08x)\n",
- count, host_diagnostic));
+ ioc_info(ioc, "wrote magic sequence: count(%d), host_diagnostic(0x%08x)\n",
+ count, *host_diagnostic));
- } while ((host_diagnostic & MPI2_DIAG_DIAG_WRITE_ENABLE) == 0);
+ } while ((*host_diagnostic & MPI2_DIAG_DIAG_WRITE_ENABLE) == 0);
+ return 0;
+}
- hcb_size = ioc->base_readl(&ioc->chip->HCBSize);
+/**
+ * mpt3sas_base_lock_host_diagnostic: Disable Host Diagnostic Register writes
+ * @ioc: per adapter object
+ */
+void
+mpt3sas_base_lock_host_diagnostic(struct MPT3SAS_ADAPTER *ioc)
+{
+ drsprintk(ioc, ioc_info(ioc, "disable writes to the diagnostic register\n"));
+ writel(MPI2_WRSEQ_FLUSH_KEY_VALUE, &ioc->chip->WriteSequence);
+}
+
+/**
+ * _base_diag_reset - the "big hammer" start of day reset
+ * @ioc: per adapter object
+ *
+ * Return: 0 for success, non-zero for failure.
+ */
+static int
+_base_diag_reset(struct MPT3SAS_ADAPTER *ioc)
+{
+ u32 host_diagnostic;
+ u32 ioc_state;
+ u32 count;
+ u32 hcb_size;
+
+ ioc_info(ioc, "sending diag reset !!\n");
+
+ pci_cfg_access_lock(ioc->pdev);
+
+ drsprintk(ioc, ioc_info(ioc, "clear interrupts\n"));
+
+ mutex_lock(&ioc->hostdiag_unlock_mutex);
+ if (mpt3sas_base_unlock_and_get_host_diagnostic(ioc, &host_diagnostic))
+ goto out;
+
+ hcb_size = ioc->base_readl(&ioc->chip->HCBSize);
drsprintk(ioc, ioc_info(ioc, "diag reset: issued\n"));
writel(host_diagnostic | MPI2_DIAG_RESET_ADAPTER,
&ioc->chip->HostDiagnostic);
- /*This delay allows the chip PCIe hardware time to finish reset tasks*/
+ /* This delay allows the chip PCIe hardware time to finish reset tasks */
msleep(MPI2_HARD_RESET_PCIE_FIRST_READ_DELAY_MICRO_SEC/1000);
/* Approximately 300 second max wait */
for (count = 0; count < (300000000 /
- MPI2_HARD_RESET_PCIE_SECOND_READ_DELAY_MICRO_SEC); count++) {
+ MPI2_HARD_RESET_PCIE_SECOND_READ_DELAY_MICRO_SEC); count++) {
host_diagnostic = ioc->base_readl_ext_retry(&ioc->chip->HostDiagnostic);
if (!(host_diagnostic & MPI2_DIAG_RESET_ADAPTER))
break;
- msleep(MPI2_HARD_RESET_PCIE_SECOND_READ_DELAY_MICRO_SEC / 1000);
+ /* Wait to pass the second read delay window */
+ msleep(MPI2_HARD_RESET_PCIE_SECOND_READ_DELAY_MICRO_SEC/1000);
}
if (host_diagnostic & MPI2_DIAG_HCB_MODE) {
drsprintk(ioc,
- ioc_info(ioc, "restart the adapter assuming the HCB Address points to good F/W\n"));
+ ioc_info(ioc, "restart the adapter assuming the\n"
+ "HCB Address points to good F/W\n"));
host_diagnostic &= ~MPI2_DIAG_BOOT_DEVICE_SELECT_MASK;
host_diagnostic |= MPI2_DIAG_BOOT_DEVICE_SELECT_HCDW;
writel(host_diagnostic, &ioc->chip->HostDiagnostic);
writel(host_diagnostic & ~MPI2_DIAG_HOLD_IOC_RESET,
&ioc->chip->HostDiagnostic);
- drsprintk(ioc,
- ioc_info(ioc, "disable writes to the diagnostic register\n"));
- writel(MPI2_WRSEQ_FLUSH_KEY_VALUE, &ioc->chip->WriteSequence);
+ mpt3sas_base_lock_host_diagnostic(ioc);
+ mutex_unlock(&ioc->hostdiag_unlock_mutex);
drsprintk(ioc, ioc_info(ioc, "Wait for FW to go to the READY state\n"));
ioc_state = _base_wait_on_iocstate(ioc, MPI2_IOC_STATE_READY, 20);
out:
pci_cfg_access_unlock(ioc->pdev);
ioc_err(ioc, "diag reset: FAILED\n");
+ mutex_unlock(&ioc->hostdiag_unlock_mutex);
return -EFAULT;
}
return 0;
}
+/**
+ * _ctl_enable_diag_sbr_reload - enable sbr reload bit
+ * @ioc: per adapter object
+ * @arg: user space buffer containing ioctl content
+ *
+ * Enable the SBR reload bit
+ */
+static int
+_ctl_enable_diag_sbr_reload(struct MPT3SAS_ADAPTER *ioc, void __user *arg)
+{
+ u32 ioc_state, host_diagnostic;
+
+ if (ioc->shost_recovery ||
+ ioc->pci_error_recovery || ioc->is_driver_loading ||
+ ioc->remove_host)
+ return -EAGAIN;
+
+ ioc_state = mpt3sas_base_get_iocstate(ioc, 1);
+
+ if (ioc_state != MPI2_IOC_STATE_OPERATIONAL)
+ return -EFAULT;
+
+ host_diagnostic = ioc->base_readl(&ioc->chip->HostDiagnostic);
+
+ if (host_diagnostic & MPI2_DIAG_SBR_RELOAD)
+ return 0;
+
+ if (mutex_trylock(&ioc->hostdiag_unlock_mutex)) {
+ if (mpt3sas_base_unlock_and_get_host_diagnostic(ioc, &host_diagnostic)) {
+ mutex_unlock(&ioc->hostdiag_unlock_mutex);
+ return -EFAULT;
+ }
+ } else
+ return -EAGAIN;
+
+ host_diagnostic |= MPI2_DIAG_SBR_RELOAD;
+ writel(host_diagnostic, &ioc->chip->HostDiagnostic);
+ host_diagnostic = ioc->base_readl(&ioc->chip->HostDiagnostic);
+ mpt3sas_base_lock_host_diagnostic(ioc);
+ mutex_unlock(&ioc->hostdiag_unlock_mutex);
+
+ if (!(host_diagnostic & MPI2_DIAG_SBR_RELOAD)) {
+ ioc_err(ioc, "%s: Failed to set Diag SBR Reload Bit\n", __func__);
+ return -EFAULT;
+ }
+
+ ioc_info(ioc, "%s: Successfully set the Diag SBR Reload Bit\n", __func__);
+ return 0;
+}
+
#ifdef CONFIG_COMPAT
/**
* _ctl_compat_mpt_command - convert 32bit pointers to 64bit.
if (_IOC_SIZE(cmd) == sizeof(struct mpt3_addnl_diag_query))
ret = _ctl_addnl_diag_query(ioc, arg);
break;
+ case MPT3ENABLEDIAGSBRRELOAD:
+ if (_IOC_SIZE(cmd) == sizeof(struct mpt3_enable_diag_sbr_reload))
+ ret = _ctl_enable_diag_sbr_reload(ioc, arg);
+ break;
default:
dctlprintk(ioc,
ioc_info(ioc, "unsupported ioctl opcode(0x%08x)\n",
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