]> Pileus Git - ~andy/linux/blob - drivers/staging/keucr/smscsi.c
Linux 3.14
[~andy/linux] / drivers / staging / keucr / smscsi.c
1 #include <linux/sched.h>
2 #include <linux/errno.h>
3 #include <linux/slab.h>
4
5 #include <scsi/scsi.h>
6 #include <scsi/scsi_eh.h>
7 #include <scsi/scsi_device.h>
8
9 #include "usb.h"
10 #include "scsiglue.h"
11 #include "transport.h"
12 #include "smil.h"
13
14 static int SM_SCSI_Test_Unit_Ready(struct us_data *us, struct scsi_cmnd *srb);
15 static int SM_SCSI_Inquiry(struct us_data *us, struct scsi_cmnd *srb);
16 static int SM_SCSI_Mode_Sense(struct us_data *us, struct scsi_cmnd *srb);
17 static int SM_SCSI_Read_Capacity(struct us_data *us, struct scsi_cmnd *srb);
18 static int SM_SCSI_Read(struct us_data *us, struct scsi_cmnd *srb);
19 static int SM_SCSI_Write(struct us_data *us, struct scsi_cmnd *srb);
20
21 /* ----- SM_SCSIIrp() -------------------------------------------------- */
22 int SM_SCSIIrp(struct us_data *us, struct scsi_cmnd *srb)
23 {
24         int    result;
25
26         us->SrbStatus = SS_SUCCESS;
27         switch (srb->cmnd[0]) {
28         case TEST_UNIT_READY:
29                 result = SM_SCSI_Test_Unit_Ready(us, srb);
30                 break;          /* 0x00 */
31         case INQUIRY:
32                 result = SM_SCSI_Inquiry(us, srb);
33                 break;          /* 0x12 */
34         case MODE_SENSE:
35                 result = SM_SCSI_Mode_Sense(us, srb);
36                 break;          /* 0x1A */
37         case READ_CAPACITY:
38                 result = SM_SCSI_Read_Capacity(us, srb);
39                 break;          /* 0x25 */
40         case READ_10:
41                 result = SM_SCSI_Read(us, srb);
42                 break;          /* 0x28 */
43         case WRITE_10:
44                 result = SM_SCSI_Write(us, srb);
45                 break;          /* 0x2A */
46
47         default:
48                         us->SrbStatus = SS_ILLEGAL_REQUEST;
49                         result = USB_STOR_TRANSPORT_FAILED;
50                         break;
51         }
52         return result;
53 }
54
55 /* ----- SM_SCSI_Test_Unit_Ready() ------------------------------------- */
56 static int SM_SCSI_Test_Unit_Ready(struct us_data *us, struct scsi_cmnd *srb)
57 {
58         if (us->SM_Status.Insert && us->SM_Status.Ready)
59                 return USB_STOR_TRANSPORT_GOOD;
60         else {
61                 ENE_SMInit(us);
62                 return USB_STOR_TRANSPORT_GOOD;
63         }
64
65         return USB_STOR_TRANSPORT_GOOD;
66 }
67
68 /* ----- SM_SCSI_Inquiry() --------------------------------------------- */
69 static int SM_SCSI_Inquiry(struct us_data *us, struct scsi_cmnd *srb)
70 {
71         BYTE data_ptr[36] = {0x00, 0x80, 0x02, 0x00, 0x1F, 0x00, 0x00, 0x00,
72                                  0x55, 0x53, 0x42, 0x32, 0x2E, 0x30, 0x20,
73                                  0x20, 0x43, 0x61, 0x72, 0x64, 0x52, 0x65,
74                                  0x61, 0x64, 0x65, 0x72, 0x20, 0x20, 0x20,
75                                  0x20, 0x20, 0x20, 0x30, 0x31, 0x30, 0x30};
76
77         usb_stor_set_xfer_buf(us, data_ptr, 36, srb, TO_XFER_BUF);
78         return USB_STOR_TRANSPORT_GOOD;
79 }
80
81
82 /* ----- SM_SCSI_Mode_Sense() ------------------------------------------ */
83 static int SM_SCSI_Mode_Sense(struct us_data *us, struct scsi_cmnd *srb)
84 {
85         BYTE    mediaNoWP[12] = {0x0b, 0x00, 0x00, 0x08, 0x00, 0x00,
86                                 0x71, 0xc0, 0x00, 0x00, 0x02, 0x00};
87         BYTE    mediaWP[12]   = {0x0b, 0x00, 0x80, 0x08, 0x00, 0x00,
88                                 0x71, 0xc0, 0x00, 0x00, 0x02, 0x00};
89
90         if (us->SM_Status.WtP)
91                 usb_stor_set_xfer_buf(us, mediaWP, 12, srb, TO_XFER_BUF);
92         else
93                 usb_stor_set_xfer_buf(us, mediaNoWP, 12, srb, TO_XFER_BUF);
94
95
96         return USB_STOR_TRANSPORT_GOOD;
97 }
98
99 /* ----- SM_SCSI_Read_Capacity() --------------------------------------- */
100 static int SM_SCSI_Read_Capacity(struct us_data *us, struct scsi_cmnd *srb)
101 {
102         unsigned int offset = 0;
103         struct scatterlist *sg = NULL;
104         DWORD   bl_num;
105         WORD    bl_len;
106         BYTE    buf[8];
107
108         dev_dbg(&us->pusb_dev->dev, "SM_SCSI_Read_Capacity\n");
109
110         bl_len = 0x200;
111         bl_num = Ssfdc.MaxLogBlocks * Ssfdc.MaxSectors * Ssfdc.MaxZones - 1;
112
113         us->bl_num = bl_num;
114         dev_dbg(&us->pusb_dev->dev, "bl_len = %x\n", bl_len);
115         dev_dbg(&us->pusb_dev->dev, "bl_num = %x\n", bl_num);
116
117         buf[0] = (bl_num >> 24) & 0xff;
118         buf[1] = (bl_num >> 16) & 0xff;
119         buf[2] = (bl_num >> 8) & 0xff;
120         buf[3] = (bl_num >> 0) & 0xff;
121         buf[4] = (bl_len >> 24) & 0xff;
122         buf[5] = (bl_len >> 16) & 0xff;
123         buf[6] = (bl_len >> 8) & 0xff;
124         buf[7] = (bl_len >> 0) & 0xff;
125
126         usb_stor_access_xfer_buf(us, buf, 8, srb, &sg, &offset, TO_XFER_BUF);
127
128         return USB_STOR_TRANSPORT_GOOD;
129 }
130
131 /* ----- SM_SCSI_Read() -------------------------------------------------- */
132 static int SM_SCSI_Read(struct us_data *us, struct scsi_cmnd *srb)
133 {
134         int result = 0;
135         PBYTE   Cdb = srb->cmnd;
136         DWORD bn  =  ((Cdb[2] << 24) & 0xff000000) |
137                         ((Cdb[3] << 16) & 0x00ff0000) |
138                         ((Cdb[4] << 8) & 0x0000ff00) |
139                         ((Cdb[5] << 0) & 0x000000ff);
140         WORD  blen = ((Cdb[7] << 8) & 0xff00)     | ((Cdb[8] << 0) & 0x00ff);
141         DWORD   blenByte = blen * 0x200;
142         void    *buf;
143
144
145         if (bn > us->bl_num)
146                 return USB_STOR_TRANSPORT_ERROR;
147
148         buf = kmalloc(blenByte, GFP_KERNEL);
149         if (buf == NULL)
150                 return USB_STOR_TRANSPORT_ERROR;
151         result = Media_D_ReadSector(us, bn, blen, buf);
152         usb_stor_set_xfer_buf(us, buf, blenByte, srb, TO_XFER_BUF);
153         kfree(buf);
154
155         if (!result)
156                 return USB_STOR_TRANSPORT_GOOD;
157         else
158                 return USB_STOR_TRANSPORT_ERROR;
159
160         return USB_STOR_TRANSPORT_GOOD;
161 }
162
163 /* ----- SM_SCSI_Write() -------------------------------------------------- */
164 static int SM_SCSI_Write(struct us_data *us, struct scsi_cmnd *srb)
165 {
166         int result = 0;
167         PBYTE   Cdb = srb->cmnd;
168         DWORD bn  =  ((Cdb[2] << 24) & 0xff000000) |
169                         ((Cdb[3] << 16) & 0x00ff0000) |
170                         ((Cdb[4] << 8) & 0x0000ff00) |
171                         ((Cdb[5] << 0) & 0x000000ff);
172         WORD  blen = ((Cdb[7] << 8) & 0xff00)     | ((Cdb[8] << 0) & 0x00ff);
173         DWORD   blenByte = blen * 0x200;
174         void    *buf;
175
176
177         if (bn > us->bl_num)
178                 return USB_STOR_TRANSPORT_ERROR;
179
180         buf = kmalloc(blenByte, GFP_KERNEL);
181         if (buf == NULL)
182                 return USB_STOR_TRANSPORT_ERROR;
183         usb_stor_set_xfer_buf(us, buf, blenByte, srb, FROM_XFER_BUF);
184         result = Media_D_CopySector(us, bn, blen, buf);
185         kfree(buf);
186
187         if (!result)
188                 return USB_STOR_TRANSPORT_GOOD;
189         else
190                 return USB_STOR_TRANSPORT_ERROR;
191
192         return USB_STOR_TRANSPORT_GOOD;
193 }
194