kernel_optimize_test/drivers/usb/storage/sierra_ms.c
Paul Gortmaker 6eb0de8270 usb: Add module.h to drivers/usb consumers who really use it.
The situation up to this point meant that module.h was pretty
much everywhere, regardless of whether you asked for it or not.
We are fixing that, so give the USB folks who want it an actual
include of it.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2011-10-31 19:31:25 -04:00

208 lines
5.4 KiB
C

#include <scsi/scsi.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_device.h>
#include <linux/usb.h>
#include <linux/module.h>
#include <linux/slab.h>
#include "usb.h"
#include "transport.h"
#include "protocol.h"
#include "scsiglue.h"
#include "sierra_ms.h"
#include "debug.h"
#define SWIMS_USB_REQUEST_SetSwocMode 0x0B
#define SWIMS_USB_REQUEST_GetSwocInfo 0x0A
#define SWIMS_USB_INDEX_SetMode 0x0000
#define SWIMS_SET_MODE_Modem 0x0001
#define TRU_NORMAL 0x01
#define TRU_FORCE_MS 0x02
#define TRU_FORCE_MODEM 0x03
static unsigned int swi_tru_install = 1;
module_param(swi_tru_install, uint, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(swi_tru_install, "TRU-Install mode (1=Full Logic (def),"
" 2=Force CD-Rom, 3=Force Modem)");
struct swoc_info {
__u8 rev;
__u8 reserved[8];
__u16 LinuxSKU;
__u16 LinuxVer;
__u8 reserved2[47];
} __attribute__((__packed__));
static bool containsFullLinuxPackage(struct swoc_info *swocInfo)
{
if ((swocInfo->LinuxSKU >= 0x2100 && swocInfo->LinuxSKU <= 0x2FFF) ||
(swocInfo->LinuxSKU >= 0x7100 && swocInfo->LinuxSKU <= 0x7FFF))
return true;
else
return false;
}
static int sierra_set_ms_mode(struct usb_device *udev, __u16 eSWocMode)
{
int result;
US_DEBUGP("SWIMS: %s", "DEVICE MODE SWITCH\n");
result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
SWIMS_USB_REQUEST_SetSwocMode, /* __u8 request */
USB_TYPE_VENDOR | USB_DIR_OUT, /* __u8 request type */
eSWocMode, /* __u16 value */
0x0000, /* __u16 index */
NULL, /* void *data */
0, /* __u16 size */
USB_CTRL_SET_TIMEOUT); /* int timeout */
return result;
}
static int sierra_get_swoc_info(struct usb_device *udev,
struct swoc_info *swocInfo)
{
int result;
US_DEBUGP("SWIMS: Attempting to get TRU-Install info.\n");
result = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
SWIMS_USB_REQUEST_GetSwocInfo, /* __u8 request */
USB_TYPE_VENDOR | USB_DIR_IN, /* __u8 request type */
0, /* __u16 value */
0, /* __u16 index */
(void *) swocInfo, /* void *data */
sizeof(struct swoc_info), /* __u16 size */
USB_CTRL_SET_TIMEOUT); /* int timeout */
swocInfo->LinuxSKU = le16_to_cpu(swocInfo->LinuxSKU);
swocInfo->LinuxVer = le16_to_cpu(swocInfo->LinuxVer);
return result;
}
static void debug_swoc(struct swoc_info *swocInfo)
{
US_DEBUGP("SWIMS: SWoC Rev: %02d \n", swocInfo->rev);
US_DEBUGP("SWIMS: Linux SKU: %04X \n", swocInfo->LinuxSKU);
US_DEBUGP("SWIMS: Linux Version: %04X \n", swocInfo->LinuxVer);
}
static ssize_t show_truinst(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct swoc_info *swocInfo;
struct usb_interface *intf = to_usb_interface(dev);
struct usb_device *udev = interface_to_usbdev(intf);
int result;
if (swi_tru_install == TRU_FORCE_MS) {
result = snprintf(buf, PAGE_SIZE, "Forced Mass Storage\n");
} else {
swocInfo = kmalloc(sizeof(struct swoc_info), GFP_KERNEL);
if (!swocInfo) {
US_DEBUGP("SWIMS: Allocation failure\n");
snprintf(buf, PAGE_SIZE, "Error\n");
return -ENOMEM;
}
result = sierra_get_swoc_info(udev, swocInfo);
if (result < 0) {
US_DEBUGP("SWIMS: failed SWoC query\n");
kfree(swocInfo);
snprintf(buf, PAGE_SIZE, "Error\n");
return -EIO;
}
debug_swoc(swocInfo);
result = snprintf(buf, PAGE_SIZE,
"REV=%02d SKU=%04X VER=%04X\n",
swocInfo->rev,
swocInfo->LinuxSKU,
swocInfo->LinuxVer);
kfree(swocInfo);
}
return result;
}
static DEVICE_ATTR(truinst, S_IRUGO, show_truinst, NULL);
int sierra_ms_init(struct us_data *us)
{
int result, retries;
struct swoc_info *swocInfo;
struct usb_device *udev;
struct Scsi_Host *sh;
struct scsi_device *sd;
retries = 3;
result = 0;
udev = us->pusb_dev;
sh = us_to_host(us);
sd = scsi_get_host_dev(sh);
US_DEBUGP("SWIMS: sierra_ms_init called\n");
/* Force Modem mode */
if (swi_tru_install == TRU_FORCE_MODEM) {
US_DEBUGP("SWIMS: %s", "Forcing Modem Mode\n");
result = sierra_set_ms_mode(udev, SWIMS_SET_MODE_Modem);
if (result < 0)
US_DEBUGP("SWIMS: Failed to switch to modem mode.\n");
return -EIO;
}
/* Force Mass Storage mode (keep CD-Rom) */
else if (swi_tru_install == TRU_FORCE_MS) {
US_DEBUGP("SWIMS: %s", "Forcing Mass Storage Mode\n");
goto complete;
}
/* Normal TRU-Install Logic */
else {
US_DEBUGP("SWIMS: %s", "Normal SWoC Logic\n");
swocInfo = kmalloc(sizeof(struct swoc_info),
GFP_KERNEL);
if (!swocInfo) {
US_DEBUGP("SWIMS: %s", "Allocation failure\n");
return -ENOMEM;
}
retries = 3;
do {
retries--;
result = sierra_get_swoc_info(udev, swocInfo);
if (result < 0) {
US_DEBUGP("SWIMS: %s", "Failed SWoC query\n");
schedule_timeout_uninterruptible(2*HZ);
}
} while (retries && result < 0);
if (result < 0) {
US_DEBUGP("SWIMS: %s",
"Completely failed SWoC query\n");
kfree(swocInfo);
return -EIO;
}
debug_swoc(swocInfo);
/* If there is not Linux software on the TRU-Install device
* then switch to modem mode
*/
if (!containsFullLinuxPackage(swocInfo)) {
US_DEBUGP("SWIMS: %s",
"Switching to Modem Mode\n");
result = sierra_set_ms_mode(udev,
SWIMS_SET_MODE_Modem);
if (result < 0)
US_DEBUGP("SWIMS: Failed to switch modem\n");
kfree(swocInfo);
return -EIO;
}
kfree(swocInfo);
}
complete:
result = device_create_file(&us->pusb_intf->dev, &dev_attr_truinst);
return 0;
}