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32fe5e39 KL |
1 | #include <scsi/scsi.h> |
2 | #include <scsi/scsi_host.h> | |
3 | #include <scsi/scsi_cmnd.h> | |
4 | #include <scsi/scsi_device.h> | |
5 | #include <linux/usb.h> | |
6 | ||
7 | #include "usb.h" | |
8 | #include "transport.h" | |
9 | #include "protocol.h" | |
10 | #include "scsiglue.h" | |
11 | #include "sierra_ms.h" | |
12 | #include "debug.h" | |
13 | ||
14 | #define SWIMS_USB_REQUEST_SetSwocMode 0x0B | |
15 | #define SWIMS_USB_REQUEST_GetSwocInfo 0x0A | |
16 | #define SWIMS_USB_INDEX_SetMode 0x0000 | |
17 | #define SWIMS_SET_MODE_Modem 0x0001 | |
18 | ||
19 | #define TRU_NORMAL 0x01 | |
20 | #define TRU_FORCE_MS 0x02 | |
21 | #define TRU_FORCE_MODEM 0x03 | |
22 | ||
23 | static unsigned int swi_tru_install = 1; | |
24 | module_param(swi_tru_install, uint, S_IRUGO | S_IWUSR); | |
25 | MODULE_PARM_DESC(swi_tru_install, "TRU-Install mode (1=Full Logic (def)," | |
26 | " 2=Force CD-Rom, 3=Force Modem)"); | |
27 | ||
28 | struct swoc_info { | |
29 | __u8 rev; | |
30 | __u8 reserved[8]; | |
31 | __u16 LinuxSKU; | |
32 | __u16 LinuxVer; | |
33 | __u8 reserved2[47]; | |
34 | } __attribute__((__packed__)); | |
35 | ||
36 | static bool containsFullLinuxPackage(struct swoc_info *swocInfo) | |
37 | { | |
38 | if ((swocInfo->LinuxSKU >= 0x2100 && swocInfo->LinuxSKU <= 0x2FFF) || | |
39 | (swocInfo->LinuxSKU >= 0x7100 && swocInfo->LinuxSKU <= 0x7FFF)) | |
40 | return true; | |
41 | else | |
42 | return false; | |
43 | } | |
44 | ||
45 | static int sierra_set_ms_mode(struct usb_device *udev, __u16 eSWocMode) | |
46 | { | |
47 | int result; | |
48 | US_DEBUGP("SWIMS: %s", "DEVICE MODE SWITCH\n"); | |
49 | result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), | |
50 | SWIMS_USB_REQUEST_SetSwocMode, /* __u8 request */ | |
51 | USB_TYPE_VENDOR | USB_DIR_OUT, /* __u8 request type */ | |
52 | eSWocMode, /* __u16 value */ | |
53 | 0x0000, /* __u16 index */ | |
54 | NULL, /* void *data */ | |
55 | 0, /* __u16 size */ | |
56 | USB_CTRL_SET_TIMEOUT); /* int timeout */ | |
57 | return result; | |
58 | } | |
59 | ||
60 | ||
61 | static int sierra_get_swoc_info(struct usb_device *udev, | |
62 | struct swoc_info *swocInfo) | |
63 | { | |
64 | int result; | |
65 | ||
66 | US_DEBUGP("SWIMS: Attempting to get TRU-Install info.\n"); | |
67 | ||
68 | result = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), | |
69 | SWIMS_USB_REQUEST_GetSwocInfo, /* __u8 request */ | |
70 | USB_TYPE_VENDOR | USB_DIR_IN, /* __u8 request type */ | |
71 | 0, /* __u16 value */ | |
72 | 0, /* __u16 index */ | |
73 | (void *) swocInfo, /* void *data */ | |
74 | sizeof(struct swoc_info), /* __u16 size */ | |
75 | USB_CTRL_SET_TIMEOUT); /* int timeout */ | |
76 | ||
77 | swocInfo->LinuxSKU = le16_to_cpu(swocInfo->LinuxSKU); | |
78 | swocInfo->LinuxVer = le16_to_cpu(swocInfo->LinuxVer); | |
79 | return result; | |
80 | } | |
81 | ||
82 | static void debug_swoc(struct swoc_info *swocInfo) | |
83 | { | |
84 | US_DEBUGP("SWIMS: SWoC Rev: %02d \n", swocInfo->rev); | |
85 | US_DEBUGP("SWIMS: Linux SKU: %04X \n", swocInfo->LinuxSKU); | |
86 | US_DEBUGP("SWIMS: Linux Version: %04X \n", swocInfo->LinuxVer); | |
87 | } | |
88 | ||
89 | ||
90 | static ssize_t show_truinst(struct device *dev, struct device_attribute *attr, | |
91 | char *buf) | |
92 | { | |
93 | struct swoc_info *swocInfo; | |
94 | struct usb_interface *intf = to_usb_interface(dev); | |
95 | struct usb_device *udev = interface_to_usbdev(intf); | |
96 | int result; | |
97 | if (swi_tru_install == TRU_FORCE_MS) { | |
98 | result = snprintf(buf, PAGE_SIZE, "Forced Mass Storage\n"); | |
99 | } else { | |
100 | swocInfo = kmalloc(sizeof(struct swoc_info), GFP_KERNEL); | |
101 | if (!swocInfo) { | |
102 | US_DEBUGP("SWIMS: Allocation failure\n"); | |
103 | snprintf(buf, PAGE_SIZE, "Error\n"); | |
104 | return -ENOMEM; | |
105 | } | |
106 | result = sierra_get_swoc_info(udev, swocInfo); | |
107 | if (result < 0) { | |
108 | US_DEBUGP("SWIMS: failed SWoC query\n"); | |
109 | kfree(swocInfo); | |
110 | snprintf(buf, PAGE_SIZE, "Error\n"); | |
111 | return -EIO; | |
112 | } | |
113 | debug_swoc(swocInfo); | |
114 | result = snprintf(buf, PAGE_SIZE, | |
115 | "REV=%02d SKU=%04X VER=%04X\n", | |
116 | swocInfo->rev, | |
117 | swocInfo->LinuxSKU, | |
118 | swocInfo->LinuxVer); | |
119 | kfree(swocInfo); | |
120 | } | |
121 | return result; | |
122 | } | |
123 | static DEVICE_ATTR(truinst, S_IWUGO | S_IRUGO, show_truinst, NULL); | |
124 | ||
125 | int sierra_ms_init(struct us_data *us) | |
126 | { | |
127 | int result, retries; | |
128 | signed long delay_t; | |
129 | struct swoc_info *swocInfo; | |
130 | struct usb_device *udev; | |
131 | struct Scsi_Host *sh; | |
132 | struct scsi_device *sd; | |
133 | ||
134 | delay_t = 2; | |
135 | retries = 3; | |
136 | result = 0; | |
137 | udev = us->pusb_dev; | |
138 | ||
139 | sh = us_to_host(us); | |
140 | sd = scsi_get_host_dev(sh); | |
141 | ||
142 | US_DEBUGP("SWIMS: sierra_ms_init called\n"); | |
143 | ||
144 | /* Force Modem mode */ | |
145 | if (swi_tru_install == TRU_FORCE_MODEM) { | |
146 | US_DEBUGP("SWIMS: %s", "Forcing Modem Mode\n"); | |
147 | result = sierra_set_ms_mode(udev, SWIMS_SET_MODE_Modem); | |
148 | if (result < 0) | |
149 | US_DEBUGP("SWIMS: Failed to switch to modem mode.\n"); | |
150 | return -EIO; | |
151 | } | |
152 | /* Force Mass Storage mode (keep CD-Rom) */ | |
153 | else if (swi_tru_install == TRU_FORCE_MS) { | |
154 | US_DEBUGP("SWIMS: %s", "Forcing Mass Storage Mode\n"); | |
155 | goto complete; | |
156 | } | |
157 | /* Normal TRU-Install Logic */ | |
158 | else { | |
159 | US_DEBUGP("SWIMS: %s", "Normal SWoC Logic\n"); | |
160 | ||
161 | swocInfo = kmalloc(sizeof(struct swoc_info), | |
162 | GFP_KERNEL); | |
163 | if (!swocInfo) { | |
164 | US_DEBUGP("SWIMS: %s", "Allocation failure\n"); | |
165 | return -ENOMEM; | |
166 | } | |
167 | ||
168 | retries = 3; | |
169 | do { | |
170 | retries--; | |
171 | result = sierra_get_swoc_info(udev, swocInfo); | |
172 | if (result < 0) { | |
173 | US_DEBUGP("SWIMS: %s", "Failed SWoC query\n"); | |
174 | schedule_timeout_uninterruptible(2*HZ); | |
175 | } | |
176 | } while (retries && result < 0); | |
177 | ||
178 | if (result < 0) { | |
179 | US_DEBUGP("SWIMS: %s", | |
180 | "Completely failed SWoC query\n"); | |
181 | kfree(swocInfo); | |
182 | return -EIO; | |
183 | } | |
184 | ||
185 | debug_swoc(swocInfo); | |
186 | ||
187 | /* If there is not Linux software on the TRU-Install device | |
188 | * then switch to modem mode | |
189 | */ | |
190 | if (!containsFullLinuxPackage(swocInfo)) { | |
191 | US_DEBUGP("SWIMS: %s", | |
192 | "Switching to Modem Mode\n"); | |
193 | result = sierra_set_ms_mode(udev, | |
194 | SWIMS_SET_MODE_Modem); | |
195 | if (result < 0) | |
196 | US_DEBUGP("SWIMS: Failed to switch modem\n"); | |
197 | kfree(swocInfo); | |
198 | return -EIO; | |
199 | } | |
200 | kfree(swocInfo); | |
201 | } | |
202 | complete: | |
203 | result = device_create_file(&us->pusb_intf->dev, &dev_attr_truinst); | |
204 | ||
be475d90 | 205 | return 0; |
32fe5e39 KL |
206 | } |
207 |