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-rw-r--r--drivers/scsi/mpt2sas/mpt2sas_base.c13
-rw-r--r--drivers/scsi/mpt2sas/mpt2sas_base.h3
-rw-r--r--drivers/scsi/mpt2sas/mpt2sas_ctl.c125
3 files changed, 104 insertions, 37 deletions
diff --git a/drivers/scsi/mpt2sas/mpt2sas_base.c b/drivers/scsi/mpt2sas/mpt2sas_base.c
index ec3f57732e9..1d2374b5a0a 100644
--- a/drivers/scsi/mpt2sas/mpt2sas_base.c
+++ b/drivers/scsi/mpt2sas/mpt2sas_base.c
@@ -77,6 +77,17 @@ 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 = MPI2_DIAG_BUF_TYPE_TRACE(1)
+ * bit 1 set = MPI2_DIAG_BUF_TYPE_SNAPSHOT(2)
+ *
+ * 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, " enable diag buffer at driver load "
+ "time (TRACE=1/SNAP=2/default=0)");
+
int mpt2sas_fwfault_debug;
MODULE_PARM_DESC(mpt2sas_fwfault_debug, " enable detection of firmware fault "
"and halt firmware - (default=0)");
@@ -3588,6 +3599,8 @@ 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:
diff --git a/drivers/scsi/mpt2sas/mpt2sas_base.h b/drivers/scsi/mpt2sas/mpt2sas_base.h
index 0c75c0e137f..879fd70fd68 100644
--- a/drivers/scsi/mpt2sas/mpt2sas_base.h
+++ b/drivers/scsi/mpt2sas/mpt2sas_base.h
@@ -886,6 +886,9 @@ u8 mpt2sas_ctl_event_callback(struct MPT2SAS_ADAPTER *ioc, u8 msix_index,
void mpt2sas_ctl_add_to_event_log(struct MPT2SAS_ADAPTER *ioc,
Mpi2EventNotificationReply_t *mpi_reply);
+void mpt2sas_enable_diag_buffer(struct MPT2SAS_ADAPTER *ioc,
+ u8 bits_to_regsiter);
+
/* transport shared API */
u8 mpt2sas_transport_done(struct MPT2SAS_ADAPTER *ioc, u16 smid, u8 msix_index,
u32 reply);
diff --git a/drivers/scsi/mpt2sas/mpt2sas_ctl.c b/drivers/scsi/mpt2sas/mpt2sas_ctl.c
index 6901a6706ed..99a332d76f5 100644
--- a/drivers/scsi/mpt2sas/mpt2sas_ctl.c
+++ b/drivers/scsi/mpt2sas/mpt2sas_ctl.c
@@ -1256,18 +1256,15 @@ _ctl_diag_capability(struct MPT2SAS_ADAPTER *ioc, u8 buffer_type)
}
/**
- * _ctl_diag_register - application register with driver
- * @arg - user space buffer containing ioctl content
- * @state - NON_BLOCKING or BLOCKING
+ * _ctl_diag_register_2 - wrapper for registering diag buffer support
+ * @ioc: per adapter object
+ * @diag_register: the diag_register struct passed in from user space
*
- * This will allow the driver to setup any required buffers that will be
- * needed by firmware to communicate with the driver.
*/
static long
-_ctl_diag_register(void __user *arg, enum block_state state)
+_ctl_diag_register_2(struct MPT2SAS_ADAPTER *ioc,
+ struct mpt2_diag_register *diag_register)
{
- struct mpt2_diag_register karg;
- struct MPT2SAS_ADAPTER *ioc;
int rc, i;
void *request_data = NULL;
dma_addr_t request_data_dma;
@@ -1280,18 +1277,17 @@ _ctl_diag_register(void __user *arg, enum block_state state)
u16 ioc_status;
u8 issue_reset = 0;
- if (copy_from_user(&karg, arg, sizeof(karg))) {
- printk(KERN_ERR "failure at %s:%d/%s()!\n",
- __FILE__, __LINE__, __func__);
- return -EFAULT;
- }
- if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc)
- return -ENODEV;
-
dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s\n", ioc->name,
__func__));
- buffer_type = karg.buffer_type;
+ if (ioc->ctl_cmds.status != MPT2_CMD_NOT_USED) {
+ printk(MPT2SAS_ERR_FMT "%s: ctl_cmd in use\n",
+ ioc->name, __func__);
+ rc = -EAGAIN;
+ goto out;
+ }
+
+ buffer_type = diag_register->buffer_type;
if (!_ctl_diag_capability(ioc, buffer_type)) {
printk(MPT2SAS_ERR_FMT "%s: doesn't have capability for "
"buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type);
@@ -1306,24 +1302,12 @@ _ctl_diag_register(void __user *arg, enum block_state state)
return -EINVAL;
}
- if (karg.requested_buffer_size % 4) {
+ if (diag_register->requested_buffer_size % 4) {
printk(MPT2SAS_ERR_FMT "%s: the requested_buffer_size "
"is not 4 byte aligned\n", ioc->name, __func__);
return -EINVAL;
}
- if (state == NON_BLOCKING && !mutex_trylock(&ioc->ctl_cmds.mutex))
- return -EAGAIN;
- else if (mutex_lock_interruptible(&ioc->ctl_cmds.mutex))
- return -ERESTARTSYS;
-
- if (ioc->ctl_cmds.status != MPT2_CMD_NOT_USED) {
- printk(MPT2SAS_ERR_FMT "%s: ctl_cmd in use\n",
- ioc->name, __func__);
- rc = -EAGAIN;
- goto out;
- }
-
smid = mpt2sas_base_get_smid(ioc, ioc->ctl_cb_idx);
if (!smid) {
printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
@@ -1339,12 +1323,12 @@ _ctl_diag_register(void __user *arg, enum block_state state)
ioc->ctl_cmds.smid = smid;
request_data = ioc->diag_buffer[buffer_type];
- request_data_sz = karg.requested_buffer_size;
- ioc->unique_id[buffer_type] = karg.unique_id;
+ request_data_sz = diag_register->requested_buffer_size;
+ ioc->unique_id[buffer_type] = diag_register->unique_id;
ioc->diag_buffer_status[buffer_type] = 0;
- memcpy(ioc->product_specific[buffer_type], karg.product_specific,
- MPT2_PRODUCT_SPECIFIC_DWORDS);
- ioc->diagnostic_flags[buffer_type] = karg.diagnostic_flags;
+ memcpy(ioc->product_specific[buffer_type],
+ diag_register->product_specific, MPT2_PRODUCT_SPECIFIC_DWORDS);
+ ioc->diagnostic_flags[buffer_type] = diag_register->diagnostic_flags;
if (request_data) {
request_data_dma = ioc->diag_buffer_dma[buffer_type];
@@ -1374,8 +1358,8 @@ _ctl_diag_register(void __user *arg, enum block_state state)
}
mpi_request->Function = MPI2_FUNCTION_DIAG_BUFFER_POST;
- mpi_request->BufferType = karg.buffer_type;
- mpi_request->Flags = cpu_to_le32(karg.diagnostic_flags);
+ mpi_request->BufferType = diag_register->buffer_type;
+ mpi_request->Flags = cpu_to_le32(diag_register->diagnostic_flags);
mpi_request->BufferAddress = cpu_to_le64(request_data_dma);
mpi_request->BufferLength = cpu_to_le32(request_data_sz);
mpi_request->VF_ID = 0; /* TODO */
@@ -1439,6 +1423,73 @@ _ctl_diag_register(void __user *arg, enum block_state state)
request_data, request_data_dma);
ioc->ctl_cmds.status = MPT2_CMD_NOT_USED;
+ return rc;
+}
+
+/**
+ * mpt2sas_enable_diag_buffer - enabling diag_buffers support driver load time
+ * @ioc: per adapter object
+ * @bits_to_register: bitwise field where trace is bit 0, and snapshot is bit 1
+ *
+ * This is called when command line option diag_buffer_enable is enabled
+ * at driver load time.
+ */
+void
+mpt2sas_enable_diag_buffer(struct MPT2SAS_ADAPTER *ioc, u8 bits_to_register)
+{
+ struct mpt2_diag_register diag_register;
+
+ memset(&diag_register, 0, sizeof(struct mpt2_diag_register));
+
+ if (bits_to_register & 1) {
+ printk(MPT2SAS_INFO_FMT "registering trace buffer support\n",
+ ioc->name);
+ diag_register.buffer_type = MPI2_DIAG_BUF_TYPE_TRACE;
+ /* register for 1MB buffers */
+ diag_register.requested_buffer_size = (1024 * 1024);
+ diag_register.unique_id = 0x7075900;
+ _ctl_diag_register_2(ioc, &diag_register);
+ }
+
+ if (bits_to_register & 2) {
+ printk(MPT2SAS_INFO_FMT "registering snapshot buffer support\n",
+ ioc->name);
+ diag_register.buffer_type = MPI2_DIAG_BUF_TYPE_SNAPSHOT;
+ /* register for 2MB buffers */
+ diag_register.requested_buffer_size = 2 * (1024 * 1024);
+ diag_register.unique_id = 0x7075901;
+ _ctl_diag_register_2(ioc, &diag_register);
+ }
+}
+
+/**
+ * _ctl_diag_register - application register with driver
+ * @arg - user space buffer containing ioctl content
+ * @state - NON_BLOCKING or BLOCKING
+ *
+ * This will allow the driver to setup any required buffers that will be
+ * needed by firmware to communicate with the driver.
+ */
+static long
+_ctl_diag_register(void __user *arg, enum block_state state)
+{
+ struct mpt2_diag_register karg;
+ struct MPT2SAS_ADAPTER *ioc;
+ long rc;
+
+ if (copy_from_user(&karg, arg, sizeof(karg))) {
+ printk(KERN_ERR "failure at %s:%d/%s()!\n",
+ __FILE__, __LINE__, __func__);
+ return -EFAULT;
+ }
+ if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc)
+ return -ENODEV;
+
+ if (state == NON_BLOCKING && !mutex_trylock(&ioc->ctl_cmds.mutex))
+ return -EAGAIN;
+ else if (mutex_lock_interruptible(&ioc->ctl_cmds.mutex))
+ return -ERESTARTSYS;
+ rc = _ctl_diag_register_2(ioc, &karg);
mutex_unlock(&ioc->ctl_cmds.mutex);
return rc;
}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-24 21:49:00 +0000