2 #include <scsi/scsi_host.h>
3 #include <scsi/scsi_cmnd.h>
4 #include <scsi/scsi_device.h>
6 #include <linux/module.h>
7 #include <linux/slab.h>
10 #include "transport.h"
13 #include "sierra_ms.h"
16 #define SWIMS_USB_REQUEST_SetSwocMode 0x0B
17 #define SWIMS_USB_REQUEST_GetSwocInfo 0x0A
18 #define SWIMS_USB_INDEX_SetMode 0x0000
19 #define SWIMS_SET_MODE_Modem 0x0001
21 #define TRU_NORMAL 0x01
22 #define TRU_FORCE_MS 0x02
23 #define TRU_FORCE_MODEM 0x03
25 static unsigned int swi_tru_install = 1;
26 module_param(swi_tru_install, uint, S_IRUGO | S_IWUSR);
27 MODULE_PARM_DESC(swi_tru_install, "TRU-Install mode (1=Full Logic (def),"
28 " 2=Force CD-Rom, 3=Force Modem)");
36 } __attribute__((__packed__));
38 static bool containsFullLinuxPackage(struct swoc_info *swocInfo)
40 if ((swocInfo->LinuxSKU >= 0x2100 && swocInfo->LinuxSKU <= 0x2FFF) ||
41 (swocInfo->LinuxSKU >= 0x7100 && swocInfo->LinuxSKU <= 0x7FFF))
47 static int sierra_set_ms_mode(struct usb_device *udev, __u16 eSWocMode)
50 dev_dbg(&udev->dev, "SWIMS: %s", "DEVICE MODE SWITCH\n");
51 result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
52 SWIMS_USB_REQUEST_SetSwocMode, /* __u8 request */
53 USB_TYPE_VENDOR | USB_DIR_OUT, /* __u8 request type */
54 eSWocMode, /* __u16 value */
55 0x0000, /* __u16 index */
56 NULL, /* void *data */
58 USB_CTRL_SET_TIMEOUT); /* int timeout */
63 static int sierra_get_swoc_info(struct usb_device *udev,
64 struct swoc_info *swocInfo)
68 dev_dbg(&udev->dev, "SWIMS: Attempting to get TRU-Install info\n");
70 result = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
71 SWIMS_USB_REQUEST_GetSwocInfo, /* __u8 request */
72 USB_TYPE_VENDOR | USB_DIR_IN, /* __u8 request type */
75 (void *) swocInfo, /* void *data */
76 sizeof(struct swoc_info), /* __u16 size */
77 USB_CTRL_SET_TIMEOUT); /* int timeout */
79 swocInfo->LinuxSKU = le16_to_cpu(swocInfo->LinuxSKU);
80 swocInfo->LinuxVer = le16_to_cpu(swocInfo->LinuxVer);
84 static void debug_swoc(const struct device *dev, struct swoc_info *swocInfo)
86 dev_dbg(dev, "SWIMS: SWoC Rev: %02d\n", swocInfo->rev);
87 dev_dbg(dev, "SWIMS: Linux SKU: %04X\n", swocInfo->LinuxSKU);
88 dev_dbg(dev, "SWIMS: Linux Version: %04X\n", swocInfo->LinuxVer);
92 static ssize_t show_truinst(struct device *dev, struct device_attribute *attr,
95 struct swoc_info *swocInfo;
96 struct usb_interface *intf = to_usb_interface(dev);
97 struct usb_device *udev = interface_to_usbdev(intf);
99 if (swi_tru_install == TRU_FORCE_MS) {
100 result = snprintf(buf, PAGE_SIZE, "Forced Mass Storage\n");
102 swocInfo = kmalloc(sizeof(struct swoc_info), GFP_KERNEL);
104 snprintf(buf, PAGE_SIZE, "Error\n");
107 result = sierra_get_swoc_info(udev, swocInfo);
109 dev_dbg(dev, "SWIMS: failed SWoC query\n");
111 snprintf(buf, PAGE_SIZE, "Error\n");
114 debug_swoc(dev, swocInfo);
115 result = snprintf(buf, PAGE_SIZE,
116 "REV=%02d SKU=%04X VER=%04X\n",
124 static DEVICE_ATTR(truinst, S_IRUGO, show_truinst, NULL);
126 int sierra_ms_init(struct us_data *us)
129 struct swoc_info *swocInfo;
130 struct usb_device *udev;
131 struct Scsi_Host *sh;
138 scsi_get_host_dev(sh);
140 /* Force Modem mode */
141 if (swi_tru_install == TRU_FORCE_MODEM) {
142 usb_stor_dbg(us, "SWIMS: Forcing Modem Mode\n");
143 result = sierra_set_ms_mode(udev, SWIMS_SET_MODE_Modem);
145 usb_stor_dbg(us, "SWIMS: Failed to switch to modem mode\n");
148 /* Force Mass Storage mode (keep CD-Rom) */
149 else if (swi_tru_install == TRU_FORCE_MS) {
150 usb_stor_dbg(us, "SWIMS: Forcing Mass Storage Mode\n");
153 /* Normal TRU-Install Logic */
155 usb_stor_dbg(us, "SWIMS: Normal SWoC Logic\n");
157 swocInfo = kmalloc(sizeof(struct swoc_info),
165 result = sierra_get_swoc_info(udev, swocInfo);
167 usb_stor_dbg(us, "SWIMS: Failed SWoC query\n");
168 schedule_timeout_uninterruptible(2*HZ);
170 } while (retries && result < 0);
173 usb_stor_dbg(us, "SWIMS: Completely failed SWoC query\n");
178 debug_swoc(&us->pusb_dev->dev, swocInfo);
180 /* If there is not Linux software on the TRU-Install device
181 * then switch to modem mode
183 if (!containsFullLinuxPackage(swocInfo)) {
184 usb_stor_dbg(us, "SWIMS: Switching to Modem Mode\n");
185 result = sierra_set_ms_mode(udev,
186 SWIMS_SET_MODE_Modem);
188 usb_stor_dbg(us, "SWIMS: Failed to switch modem\n");
195 result = device_create_file(&us->pusb_intf->dev, &dev_attr_truinst);