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path: root/drivers/block/DAC960.c
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Diffstat (limited to 'drivers/block/DAC960.c')
-rw-r--r--drivers/block/DAC960.c160
1 files changed, 90 insertions, 70 deletions
diff --git a/drivers/block/DAC960.c b/drivers/block/DAC960.c
index 442e777bdfb2..728075214959 100644
--- a/drivers/block/DAC960.c
+++ b/drivers/block/DAC960.c
@@ -6619,43 +6619,27 @@ static void DAC960_DestroyProcEntries(DAC960_Controller_T *Controller)
#ifdef DAC960_GAM_MINOR
-/*
- * DAC960_gam_ioctl is the ioctl function for performing RAID operations.
-*/
-
-static long DAC960_gam_ioctl(struct file *file, unsigned int Request,
- unsigned long Argument)
+static long DAC960_gam_get_controller_info(DAC960_ControllerInfo_T __user *UserSpaceControllerInfo)
{
- long ErrorCode = 0;
- if (!capable(CAP_SYS_ADMIN)) return -EACCES;
-
- mutex_lock(&DAC960_mutex);
- switch (Request)
- {
- case DAC960_IOCTL_GET_CONTROLLER_COUNT:
- ErrorCode = DAC960_ControllerCount;
- break;
- case DAC960_IOCTL_GET_CONTROLLER_INFO:
- {
- DAC960_ControllerInfo_T __user *UserSpaceControllerInfo =
- (DAC960_ControllerInfo_T __user *) Argument;
DAC960_ControllerInfo_T ControllerInfo;
DAC960_Controller_T *Controller;
int ControllerNumber;
+ long ErrorCode;
+
if (UserSpaceControllerInfo == NULL)
ErrorCode = -EINVAL;
else ErrorCode = get_user(ControllerNumber,
&UserSpaceControllerInfo->ControllerNumber);
if (ErrorCode != 0)
- break;
+ goto out;
ErrorCode = -ENXIO;
if (ControllerNumber < 0 ||
ControllerNumber > DAC960_ControllerCount - 1) {
- break;
+ goto out;
}
Controller = DAC960_Controllers[ControllerNumber];
if (Controller == NULL)
- break;
+ goto out;
memset(&ControllerInfo, 0, sizeof(DAC960_ControllerInfo_T));
ControllerInfo.ControllerNumber = ControllerNumber;
ControllerInfo.FirmwareType = Controller->FirmwareType;
@@ -6670,12 +6654,12 @@ static long DAC960_gam_ioctl(struct file *file, unsigned int Request,
strcpy(ControllerInfo.FirmwareVersion, Controller->FirmwareVersion);
ErrorCode = (copy_to_user(UserSpaceControllerInfo, &ControllerInfo,
sizeof(DAC960_ControllerInfo_T)) ? -EFAULT : 0);
- break;
- }
- case DAC960_IOCTL_V1_EXECUTE_COMMAND:
- {
- DAC960_V1_UserCommand_T __user *UserSpaceUserCommand =
- (DAC960_V1_UserCommand_T __user *) Argument;
+out:
+ return ErrorCode;
+}
+
+static long DAC960_gam_v1_execute_command(DAC960_V1_UserCommand_T __user *UserSpaceUserCommand)
+{
DAC960_V1_UserCommand_T UserCommand;
DAC960_Controller_T *Controller;
DAC960_Command_T *Command = NULL;
@@ -6688,39 +6672,41 @@ static long DAC960_gam_ioctl(struct file *file, unsigned int Request,
int ControllerNumber, DataTransferLength;
unsigned char *DataTransferBuffer = NULL;
dma_addr_t DataTransferBufferDMA;
+ long ErrorCode;
+
if (UserSpaceUserCommand == NULL) {
ErrorCode = -EINVAL;
- break;
+ goto out;
}
if (copy_from_user(&UserCommand, UserSpaceUserCommand,
sizeof(DAC960_V1_UserCommand_T))) {
ErrorCode = -EFAULT;
- break;
+ goto out;
}
ControllerNumber = UserCommand.ControllerNumber;
ErrorCode = -ENXIO;
if (ControllerNumber < 0 ||
ControllerNumber > DAC960_ControllerCount - 1)
- break;
+ goto out;
Controller = DAC960_Controllers[ControllerNumber];
if (Controller == NULL)
- break;
+ goto out;
ErrorCode = -EINVAL;
if (Controller->FirmwareType != DAC960_V1_Controller)
- break;
+ goto out;
CommandOpcode = UserCommand.CommandMailbox.Common.CommandOpcode;
DataTransferLength = UserCommand.DataTransferLength;
if (CommandOpcode & 0x80)
- break;
+ goto out;
if (CommandOpcode == DAC960_V1_DCDB)
{
if (copy_from_user(&DCDB, UserCommand.DCDB,
sizeof(DAC960_V1_DCDB_T))) {
ErrorCode = -EFAULT;
- break;
+ goto out;
}
if (DCDB.Channel >= DAC960_V1_MaxChannels)
- break;
+ goto out;
if (!((DataTransferLength == 0 &&
DCDB.Direction
== DAC960_V1_DCDB_NoDataTransfer) ||
@@ -6730,15 +6716,15 @@ static long DAC960_gam_ioctl(struct file *file, unsigned int Request,
(DataTransferLength < 0 &&
DCDB.Direction
== DAC960_V1_DCDB_DataTransferSystemToDevice)))
- break;
+ goto out;
if (((DCDB.TransferLengthHigh4 << 16) | DCDB.TransferLength)
!= abs(DataTransferLength))
- break;
+ goto out;
DCDB_IOBUF = pci_alloc_consistent(Controller->PCIDevice,
sizeof(DAC960_V1_DCDB_T), &DCDB_IOBUFDMA);
if (DCDB_IOBUF == NULL) {
ErrorCode = -ENOMEM;
- break;
+ goto out;
}
}
ErrorCode = -ENOMEM;
@@ -6748,19 +6734,19 @@ static long DAC960_gam_ioctl(struct file *file, unsigned int Request,
DataTransferLength,
&DataTransferBufferDMA);
if (DataTransferBuffer == NULL)
- break;
+ goto out;
}
else if (DataTransferLength < 0)
{
DataTransferBuffer = pci_alloc_consistent(Controller->PCIDevice,
-DataTransferLength, &DataTransferBufferDMA);
if (DataTransferBuffer == NULL)
- break;
+ goto out;
if (copy_from_user(DataTransferBuffer,
UserCommand.DataTransferBuffer,
-DataTransferLength)) {
ErrorCode = -EFAULT;
- break;
+ goto out;
}
}
if (CommandOpcode == DAC960_V1_DCDB)
@@ -6837,12 +6823,12 @@ static long DAC960_gam_ioctl(struct file *file, unsigned int Request,
if (DCDB_IOBUF != NULL)
pci_free_consistent(Controller->PCIDevice, sizeof(DAC960_V1_DCDB_T),
DCDB_IOBUF, DCDB_IOBUFDMA);
- break;
- }
- case DAC960_IOCTL_V2_EXECUTE_COMMAND:
- {
- DAC960_V2_UserCommand_T __user *UserSpaceUserCommand =
- (DAC960_V2_UserCommand_T __user *) Argument;
+ out:
+ return ErrorCode;
+}
+
+static long DAC960_gam_v2_execute_command(DAC960_V2_UserCommand_T __user *UserSpaceUserCommand)
+{
DAC960_V2_UserCommand_T UserCommand;
DAC960_Controller_T *Controller;
DAC960_Command_T *Command = NULL;
@@ -6855,26 +6841,26 @@ static long DAC960_gam_ioctl(struct file *file, unsigned int Request,
dma_addr_t DataTransferBufferDMA;
unsigned char *RequestSenseBuffer = NULL;
dma_addr_t RequestSenseBufferDMA;
+ long ErrorCode = -EINVAL;
- ErrorCode = -EINVAL;
if (UserSpaceUserCommand == NULL)
- break;
+ goto out;
if (copy_from_user(&UserCommand, UserSpaceUserCommand,
sizeof(DAC960_V2_UserCommand_T))) {
ErrorCode = -EFAULT;
- break;
+ goto out;
}
ErrorCode = -ENXIO;
ControllerNumber = UserCommand.ControllerNumber;
if (ControllerNumber < 0 ||
ControllerNumber > DAC960_ControllerCount - 1)
- break;
+ goto out;
Controller = DAC960_Controllers[ControllerNumber];
if (Controller == NULL)
- break;
+ goto out;
if (Controller->FirmwareType != DAC960_V2_Controller){
ErrorCode = -EINVAL;
- break;
+ goto out;
}
DataTransferLength = UserCommand.DataTransferLength;
ErrorCode = -ENOMEM;
@@ -6884,14 +6870,14 @@ static long DAC960_gam_ioctl(struct file *file, unsigned int Request,
DataTransferLength,
&DataTransferBufferDMA);
if (DataTransferBuffer == NULL)
- break;
+ goto out;
}
else if (DataTransferLength < 0)
{
DataTransferBuffer = pci_alloc_consistent(Controller->PCIDevice,
-DataTransferLength, &DataTransferBufferDMA);
if (DataTransferBuffer == NULL)
- break;
+ goto out;
if (copy_from_user(DataTransferBuffer,
UserCommand.DataTransferBuffer,
-DataTransferLength)) {
@@ -7001,42 +6987,44 @@ static long DAC960_gam_ioctl(struct file *file, unsigned int Request,
if (RequestSenseBuffer != NULL)
pci_free_consistent(Controller->PCIDevice, RequestSenseLength,
RequestSenseBuffer, RequestSenseBufferDMA);
- break;
- }
- case DAC960_IOCTL_V2_GET_HEALTH_STATUS:
- {
- DAC960_V2_GetHealthStatus_T __user *UserSpaceGetHealthStatus =
- (DAC960_V2_GetHealthStatus_T __user *) Argument;
+out:
+ return ErrorCode;
+}
+
+static long DAC960_gam_v2_get_health_status(DAC960_V2_GetHealthStatus_T __user *UserSpaceGetHealthStatus)
+{
DAC960_V2_GetHealthStatus_T GetHealthStatus;
DAC960_V2_HealthStatusBuffer_T HealthStatusBuffer;
DAC960_Controller_T *Controller;
int ControllerNumber;
+ long ErrorCode;
+
if (UserSpaceGetHealthStatus == NULL) {
ErrorCode = -EINVAL;
- break;
+ goto out;
}
if (copy_from_user(&GetHealthStatus, UserSpaceGetHealthStatus,
sizeof(DAC960_V2_GetHealthStatus_T))) {
ErrorCode = -EFAULT;
- break;
+ goto out;
}
ErrorCode = -ENXIO;
ControllerNumber = GetHealthStatus.ControllerNumber;
if (ControllerNumber < 0 ||
ControllerNumber > DAC960_ControllerCount - 1)
- break;
+ goto out;
Controller = DAC960_Controllers[ControllerNumber];
if (Controller == NULL)
- break;
+ goto out;
if (Controller->FirmwareType != DAC960_V2_Controller) {
ErrorCode = -EINVAL;
- break;
+ goto out;
}
if (copy_from_user(&HealthStatusBuffer,
GetHealthStatus.HealthStatusBuffer,
sizeof(DAC960_V2_HealthStatusBuffer_T))) {
ErrorCode = -EFAULT;
- break;
+ goto out;
}
ErrorCode = wait_event_interruptible_timeout(Controller->HealthStatusWaitQueue,
!(Controller->V2.HealthStatusBuffer->StatusChangeCounter
@@ -7046,7 +7034,7 @@ static long DAC960_gam_ioctl(struct file *file, unsigned int Request,
DAC960_MonitoringTimerInterval);
if (ErrorCode == -ERESTARTSYS) {
ErrorCode = -EINTR;
- break;
+ goto out;
}
if (copy_to_user(GetHealthStatus.HealthStatusBuffer,
Controller->V2.HealthStatusBuffer,
@@ -7054,7 +7042,39 @@ static long DAC960_gam_ioctl(struct file *file, unsigned int Request,
ErrorCode = -EFAULT;
else
ErrorCode = 0;
- }
+
+out:
+ return ErrorCode;
+}
+
+/*
+ * DAC960_gam_ioctl is the ioctl function for performing RAID operations.
+*/
+
+static long DAC960_gam_ioctl(struct file *file, unsigned int Request,
+ unsigned long Argument)
+{
+ long ErrorCode = 0;
+ void __user *argp = (void __user *)Argument;
+ if (!capable(CAP_SYS_ADMIN)) return -EACCES;
+
+ mutex_lock(&DAC960_mutex);
+ switch (Request)
+ {
+ case DAC960_IOCTL_GET_CONTROLLER_COUNT:
+ ErrorCode = DAC960_ControllerCount;
+ break;
+ case DAC960_IOCTL_GET_CONTROLLER_INFO:
+ ErrorCode = DAC960_gam_get_controller_info(argp);
+ break;
+ case DAC960_IOCTL_V1_EXECUTE_COMMAND:
+ ErrorCode = DAC960_gam_v1_execute_command(argp);
+ break;
+ case DAC960_IOCTL_V2_EXECUTE_COMMAND:
+ ErrorCode = DAC960_gam_v2_execute_command(argp);
+ break;
+ case DAC960_IOCTL_V2_GET_HEALTH_STATUS:
+ ErrorCode = DAC960_gam_v2_get_health_status(argp);
break;
default:
ErrorCode = -ENOTTY;
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-22 06:48:04 +0100