2 #include <scsi/scsi_host.h>
3 #include <scsi/scsi_cmnd.h>
4 #include <scsi/scsi_device.h>
6 #include <linux/slab.h>
12 #include "sierra_ms.h"
15 #define SWIMS_USB_REQUEST_SetSwocMode 0x0B
16 #define SWIMS_USB_REQUEST_GetSwocInfo 0x0A
17 #define SWIMS_USB_INDEX_SetMode 0x0000
18 #define SWIMS_SET_MODE_Modem 0x0001
20 #define TRU_NORMAL 0x01
21 #define TRU_FORCE_MS 0x02
22 #define TRU_FORCE_MODEM 0x03
24 static unsigned int swi_tru_install = 1;
25 module_param(swi_tru_install, uint, S_IRUGO | S_IWUSR);
26 MODULE_PARM_DESC(swi_tru_install, "TRU-Install mode (1=Full Logic (def),"
27 " 2=Force CD-Rom, 3=Force Modem)");
35 } __attribute__((__packed__));
37 static bool containsFullLinuxPackage(struct swoc_info *swocInfo)
39 if ((swocInfo->LinuxSKU >= 0x2100 && swocInfo->LinuxSKU <= 0x2FFF) ||
40 (swocInfo->LinuxSKU >= 0x7100 && swocInfo->LinuxSKU <= 0x7FFF))
46 static int sierra_set_ms_mode(struct usb_device *udev, __u16 eSWocMode)
49 US_DEBUGP("SWIMS: %s", "DEVICE MODE SWITCH\n");
50 result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
51 SWIMS_USB_REQUEST_SetSwocMode, /* __u8 request */
52 USB_TYPE_VENDOR | USB_DIR_OUT, /* __u8 request type */
53 eSWocMode, /* __u16 value */
54 0x0000, /* __u16 index */
55 NULL, /* void *data */
57 USB_CTRL_SET_TIMEOUT); /* int timeout */
62 static int sierra_get_swoc_info(struct usb_device *udev,
63 struct swoc_info *swocInfo)
67 US_DEBUGP("SWIMS: Attempting to get TRU-Install info.\n");
69 result = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
70 SWIMS_USB_REQUEST_GetSwocInfo, /* __u8 request */
71 USB_TYPE_VENDOR | USB_DIR_IN, /* __u8 request type */
74 (void *) swocInfo, /* void *data */
75 sizeof(struct swoc_info), /* __u16 size */
76 USB_CTRL_SET_TIMEOUT); /* int timeout */
78 swocInfo->LinuxSKU = le16_to_cpu(swocInfo->LinuxSKU);
79 swocInfo->LinuxVer = le16_to_cpu(swocInfo->LinuxVer);
83 static void debug_swoc(struct swoc_info *swocInfo)
85 US_DEBUGP("SWIMS: SWoC Rev: %02d \n", swocInfo->rev);
86 US_DEBUGP("SWIMS: Linux SKU: %04X \n", swocInfo->LinuxSKU);
87 US_DEBUGP("SWIMS: Linux Version: %04X \n", swocInfo->LinuxVer);
91 static ssize_t show_truinst(struct device *dev, struct device_attribute *attr,
94 struct swoc_info *swocInfo;
95 struct usb_interface *intf = to_usb_interface(dev);
96 struct usb_device *udev = interface_to_usbdev(intf);
98 if (swi_tru_install == TRU_FORCE_MS) {
99 result = snprintf(buf, PAGE_SIZE, "Forced Mass Storage\n");
101 swocInfo = kmalloc(sizeof(struct swoc_info), GFP_KERNEL);
103 US_DEBUGP("SWIMS: Allocation failure\n");
104 snprintf(buf, PAGE_SIZE, "Error\n");
107 result = sierra_get_swoc_info(udev, swocInfo);
109 US_DEBUGP("SWIMS: failed SWoC query\n");
111 snprintf(buf, PAGE_SIZE, "Error\n");
114 debug_swoc(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;
132 struct scsi_device *sd;
139 sd = scsi_get_host_dev(sh);
141 US_DEBUGP("SWIMS: sierra_ms_init called\n");
143 /* Force Modem mode */
144 if (swi_tru_install == TRU_FORCE_MODEM) {
145 US_DEBUGP("SWIMS: %s", "Forcing Modem Mode\n");
146 result = sierra_set_ms_mode(udev, SWIMS_SET_MODE_Modem);
148 US_DEBUGP("SWIMS: Failed to switch to modem mode.\n");
151 /* Force Mass Storage mode (keep CD-Rom) */
152 else if (swi_tru_install == TRU_FORCE_MS) {
153 US_DEBUGP("SWIMS: %s", "Forcing Mass Storage Mode\n");
156 /* Normal TRU-Install Logic */
158 US_DEBUGP("SWIMS: %s", "Normal SWoC Logic\n");
160 swocInfo = kmalloc(sizeof(struct swoc_info),
163 US_DEBUGP("SWIMS: %s", "Allocation failure\n");
170 result = sierra_get_swoc_info(udev, swocInfo);
172 US_DEBUGP("SWIMS: %s", "Failed SWoC query\n");
173 schedule_timeout_uninterruptible(2*HZ);
175 } while (retries && result < 0);
178 US_DEBUGP("SWIMS: %s",
179 "Completely failed SWoC query\n");
184 debug_swoc(swocInfo);
186 /* If there is not Linux software on the TRU-Install device
187 * then switch to modem mode
189 if (!containsFullLinuxPackage(swocInfo)) {
190 US_DEBUGP("SWIMS: %s",
191 "Switching to Modem Mode\n");
192 result = sierra_set_ms_mode(udev,
193 SWIMS_SET_MODE_Modem);
195 US_DEBUGP("SWIMS: Failed to switch modem\n");
202 result = device_create_file(&us->pusb_intf->dev, &dev_attr_truinst);