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gerrit-public.fairphone.software / kernel / msm-4.9 / 64907b94dab947f3f3fc96fe1ab810cbc12ca902 / . / drivers / staging / keucr / smscsi.c
blob: 5c03eca4dba8b38e5148dc9de20eb3387be7b512 [file] [log] [blame]
Al Cho126bb032010-09-08 00:42:32 -0700[diff] [blame]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"
Al Cho126bb032010-09-08 00:42:32 -0700[diff] [blame]12#include "smil.h"
13
Rashika Kheriaafbab212013-11-01 19:24:17 +0530[diff] [blame]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);
Al Cho126bb032010-09-08 00:42:32 -0700[diff] [blame]20
Ruslan Pisareve1d94ec2011-07-22 14:16:23 +0300[diff] [blame]21/* ----- SM_SCSIIrp() -------------------------------------------------- */
Al Cho126bb032010-09-08 00:42:32 -0700[diff] [blame]22int SM_SCSIIrp(struct us_data *us, struct scsi_cmnd *srb)
23{
24 int result;
25
26 us->SrbStatus = SS_SUCCESS;
Ruslan Pisareve1d94ec2011-07-22 14:16:23 +0300[diff] [blame]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 */
Al Cho126bb032010-09-08 00:42:32 -0700[diff] [blame]46
Ruslan Pisareve1d94ec2011-07-22 14:16:23 +0300[diff] [blame]47 default:
Al Cho126bb032010-09-08 00:42:32 -0700[diff] [blame]48 us->SrbStatus = SS_ILLEGAL_REQUEST;
49 result = USB_STOR_TRANSPORT_FAILED;
50 break;
51 }
52 return result;
53}
54
Amarjargal Gundjalamb9594b82013-05-17 01:06:49 -0700[diff] [blame]55/* ----- SM_SCSI_Test_Unit_Ready() ------------------------------------- */
Rashika Kheriaafbab212013-11-01 19:24:17 +0530[diff] [blame]56static int SM_SCSI_Test_Unit_Ready(struct us_data *us, struct scsi_cmnd *srb)
Al Cho126bb032010-09-08 00:42:32 -0700[diff] [blame]57{
Al Cho126bb032010-09-08 00:42:32 -0700[diff] [blame]58 if (us->SM_Status.Insert && us->SM_Status.Ready)
59 return USB_STOR_TRANSPORT_GOOD;
Ruslan Pisareve1d94ec2011-07-22 14:16:23 +0300[diff] [blame]60 else {
Al Cho126bb032010-09-08 00:42:32 -0700[diff] [blame]61 ENE_SMInit(us);
62 return USB_STOR_TRANSPORT_GOOD;
63 }
Ruslan Pisareve1d94ec2011-07-22 14:16:23 +0300[diff] [blame]64
Al Cho126bb032010-09-08 00:42:32 -0700[diff] [blame]65 return USB_STOR_TRANSPORT_GOOD;
66}
67
Amarjargal Gundjalamb9594b82013-05-17 01:06:49 -0700[diff] [blame]68/* ----- SM_SCSI_Inquiry() --------------------------------------------- */
Rashika Kheriaafbab212013-11-01 19:24:17 +0530[diff] [blame]69static int SM_SCSI_Inquiry(struct us_data *us, struct scsi_cmnd *srb)
Al Cho126bb032010-09-08 00:42:32 -0700[diff] [blame]70{
Amarjargal Gundjalamb9594b82013-05-17 01:06:49 -0700[diff] [blame]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};
Al Cho126bb032010-09-08 00:42:32 -0700[diff] [blame]76
77 usb_stor_set_xfer_buf(us, data_ptr, 36, srb, TO_XFER_BUF);
78 return USB_STOR_TRANSPORT_GOOD;
79}
80
81
Amarjargal Gundjalamb9594b82013-05-17 01:06:49 -0700[diff] [blame]82/* ----- SM_SCSI_Mode_Sense() ------------------------------------------ */
Rashika Kheriaafbab212013-11-01 19:24:17 +0530[diff] [blame]83static int SM_SCSI_Mode_Sense(struct us_data *us, struct scsi_cmnd *srb)
Al Cho126bb032010-09-08 00:42:32 -0700[diff] [blame]84{
Amarjargal Gundjalamb9594b82013-05-17 01:06:49 -0700[diff] [blame]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};
Al Cho126bb032010-09-08 00:42:32 -0700[diff] [blame]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
Amarjargal Gundjalamb9594b82013-05-17 01:06:49 -0700[diff] [blame]99/* ----- SM_SCSI_Read_Capacity() --------------------------------------- */
Rashika Kheriaafbab212013-11-01 19:24:17 +0530[diff] [blame]100static int SM_SCSI_Read_Capacity(struct us_data *us, struct scsi_cmnd *srb)
Al Cho126bb032010-09-08 00:42:32 -0700[diff] [blame]101{
102 unsigned int offset = 0;
103 struct scatterlist *sg = NULL;
104 DWORD bl_num;
105 WORD bl_len;
106 BYTE buf[8];
107
Laura Lawniczak29b31422013-06-06 18:10:47 +0200[diff] [blame]108 dev_dbg(&us->pusb_dev->dev, "SM_SCSI_Read_Capacity\n");
Al Cho126bb032010-09-08 00:42:32 -0700[diff] [blame]109
110 bl_len = 0x200;
111 bl_num = Ssfdc.MaxLogBlocks * Ssfdc.MaxSectors * Ssfdc.MaxZones - 1;
Al Cho126bb032010-09-08 00:42:32 -0700[diff] [blame]112
113 us->bl_num = bl_num;
Laura Lawniczak29b31422013-06-06 18:10:47 +0200[diff] [blame]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);
Al Cho126bb032010-09-08 00:42:32 -0700[diff] [blame]116
Ruslan Pisareve1d94ec2011-07-22 14:16:23 +0300[diff] [blame]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
Al Cho126bb032010-09-08 00:42:32 -0700[diff] [blame]126 usb_stor_access_xfer_buf(us, buf, 8, srb, &sg, &offset, TO_XFER_BUF);
Al Cho126bb032010-09-08 00:42:32 -0700[diff] [blame]127
128 return USB_STOR_TRANSPORT_GOOD;
129}
130
Ruslan Pisareve1d94ec2011-07-22 14:16:23 +0300[diff] [blame]131/* ----- SM_SCSI_Read() -------------------------------------------------- */
Rashika Kheriaafbab212013-11-01 19:24:17 +0530[diff] [blame]132static int SM_SCSI_Read(struct us_data *us, struct scsi_cmnd *srb)
Al Cho126bb032010-09-08 00:42:32 -0700[diff] [blame]133{
Ruslan Pisareve1d94ec2011-07-22 14:16:23 +0300[diff] [blame]134 int result = 0;
Al Cho126bb032010-09-08 00:42:32 -0700[diff] [blame]135 PBYTE Cdb = srb->cmnd;
Amarjargal Gundjalamb9594b82013-05-17 01:06:49 -0700[diff] [blame]136 DWORD bn = ((Cdb[2] << 24) & 0xff000000) |
137 ((Cdb[3] << 16) & 0x00ff0000) |
138 ((Cdb[4] << 8) & 0x0000ff00) |
139 ((Cdb[5] << 0) & 0x000000ff);
Ruslan Pisareve1d94ec2011-07-22 14:16:23 +0300[diff] [blame]140 WORD blen = ((Cdb[7] << 8) & 0xff00) | ((Cdb[8] << 0) & 0x00ff);
Al Cho126bb032010-09-08 00:42:32 -0700[diff] [blame]141 DWORD blenByte = blen * 0x200;
142 void *buf;
143
Ruslan Pisareve1d94ec2011-07-22 14:16:23 +0300[diff] [blame]144
Al Cho126bb032010-09-08 00:42:32 -0700[diff] [blame]145 if (bn > us->bl_num)
146 return USB_STOR_TRANSPORT_ERROR;
147
148 buf = kmalloc(blenByte, GFP_KERNEL);
Vasiliy Kulikovb1f5f542010-09-19 11:36:23 +0400[diff] [blame]149 if (buf == NULL)
150 return USB_STOR_TRANSPORT_ERROR;
Al Cho126bb032010-09-08 00:42:32 -0700[diff] [blame]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
Ruslan Pisareve1d94ec2011-07-22 14:16:23 +0300[diff] [blame]163/* ----- SM_SCSI_Write() -------------------------------------------------- */
Rashika Kheriaafbab212013-11-01 19:24:17 +0530[diff] [blame]164static int SM_SCSI_Write(struct us_data *us, struct scsi_cmnd *srb)
Al Cho126bb032010-09-08 00:42:32 -0700[diff] [blame]165{
Ruslan Pisareve1d94ec2011-07-22 14:16:23 +0300[diff] [blame]166 int result = 0;
Al Cho126bb032010-09-08 00:42:32 -0700[diff] [blame]167 PBYTE Cdb = srb->cmnd;
Amarjargal Gundjalamb9594b82013-05-17 01:06:49 -0700[diff] [blame]168 DWORD bn = ((Cdb[2] << 24) & 0xff000000) |
169 ((Cdb[3] << 16) & 0x00ff0000) |
170 ((Cdb[4] << 8) & 0x0000ff00) |
171 ((Cdb[5] << 0) & 0x000000ff);
Ruslan Pisareve1d94ec2011-07-22 14:16:23 +0300[diff] [blame]172 WORD blen = ((Cdb[7] << 8) & 0xff00) | ((Cdb[8] << 0) & 0x00ff);
Al Cho126bb032010-09-08 00:42:32 -0700[diff] [blame]173 DWORD blenByte = blen * 0x200;
174 void *buf;
175
Al Cho126bb032010-09-08 00:42:32 -0700[diff] [blame]176
177 if (bn > us->bl_num)
178 return USB_STOR_TRANSPORT_ERROR;
179
180 buf = kmalloc(blenByte, GFP_KERNEL);
Vasiliy Kulikovb1f5f542010-09-19 11:36:23 +0400[diff] [blame]181 if (buf == NULL)
182 return USB_STOR_TRANSPORT_ERROR;
Al Cho126bb032010-09-08 00:42:32 -0700[diff] [blame]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