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Linux kernel mirror (for testing)
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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
14static int SM_SCSI_Test_Unit_Ready(struct us_data *us, struct scsi_cmnd *srb);
15static int SM_SCSI_Inquiry(struct us_data *us, struct scsi_cmnd *srb);
16static int SM_SCSI_Mode_Sense(struct us_data *us, struct scsi_cmnd *srb);
17static int SM_SCSI_Read_Capacity(struct us_data *us, struct scsi_cmnd *srb);
18static int SM_SCSI_Read(struct us_data *us, struct scsi_cmnd *srb);
19static int SM_SCSI_Write(struct us_data *us, struct scsi_cmnd *srb);
20
21/* ----- SM_SCSIIrp() -------------------------------------------------- */
22int 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() ------------------------------------- */
56static 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() --------------------------------------------- */
69static 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() ------------------------------------------ */
83static 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() --------------------------------------- */
100static 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() -------------------------------------------------- */
132static 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() -------------------------------------------------- */
164static 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