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 int SM_SCSI_Test_Unit_Ready(struct us_data *us, struct scsi_cmnd *srb);
  15 int SM_SCSI_Inquiry(struct us_data *us, struct scsi_cmnd *srb);
  16 int SM_SCSI_Mode_Sense(struct us_data *us, struct scsi_cmnd *srb);
  17 int SM_SCSI_Start_Stop(struct us_data *us, struct scsi_cmnd *srb);
  18 int SM_SCSI_Read_Capacity(struct us_data *us, struct scsi_cmnd *srb);
  19 int SM_SCSI_Read(struct us_data *us, struct scsi_cmnd *srb);
  20 int SM_SCSI_Write(struct us_data *us, struct scsi_cmnd *srb);
  21
  22 extern PBYTE                SMHostAddr;
  23 extern DWORD                ErrXDCode;
  24
  25 /* ----- SM_SCSIIrp() -------------------------------------------------- */
  26 int SM_SCSIIrp(struct us_data *us, struct scsi_cmnd *srb)
  27 {
  28         int    result;
  29
  30         us->SrbStatus = SS_SUCCESS;
  31         switch (srb->cmnd[0]) {
  32         case TEST_UNIT_READY:
  33                 result = SM_SCSI_Test_Unit_Ready(us, srb);
  34                 break;          /* 0x00 */
  35         case INQUIRY:
  36                 result = SM_SCSI_Inquiry(us, srb);
  37                 break;          /* 0x12 */
  38         case MODE_SENSE:
  39                 result = SM_SCSI_Mode_Sense(us, srb);
  40                 break;          /* 0x1A */
  41         case READ_CAPACITY:
  42                 result = SM_SCSI_Read_Capacity(us, srb);
  43                 break;          /* 0x25 */
  44         case READ_10:
  45                 result = SM_SCSI_Read(us, srb);
  46                 break;          /* 0x28 */
  47         case WRITE_10:
  48                 result = SM_SCSI_Write(us, srb);
  49                 break;          /* 0x2A */
  50
  51         default:
  52                         us->SrbStatus = SS_ILLEGAL_REQUEST;
  53                         result = USB_STOR_TRANSPORT_FAILED;
  54                         break;
  55         }
  56         return result;
  57 }
  58
  59 /* ----- SM_SCSI_Test_Unit_Ready() ------------------------------------- */
  60 int SM_SCSI_Test_Unit_Ready(struct us_data *us, struct scsi_cmnd *srb)
  61 {
  62         if (us->SM_Status.Insert && us->SM_Status.Ready)
  63                 return USB_STOR_TRANSPORT_GOOD;
  64         else {
  65                 ENE_SMInit(us);
  66                 return USB_STOR_TRANSPORT_GOOD;
  67         }
  68
  69         return USB_STOR_TRANSPORT_GOOD;
  70 }
  71
  72 /* ----- SM_SCSI_Inquiry() --------------------------------------------- */
  73 int SM_SCSI_Inquiry(struct us_data *us, struct scsi_cmnd *srb)
  74 {
  75         BYTE data_ptr[36] = {0x00, 0x80, 0x02, 0x00, 0x1F, 0x00, 0x00, 0x00,
  76                                  0x55, 0x53, 0x42, 0x32, 0x2E, 0x30, 0x20,
  77                                  0x20, 0x43, 0x61, 0x72, 0x64, 0x52, 0x65,
  78                                  0x61, 0x64, 0x65, 0x72, 0x20, 0x20, 0x20,
  79                                  0x20, 0x20, 0x20, 0x30, 0x31, 0x30, 0x30};
  80
  81         usb_stor_set_xfer_buf(us, data_ptr, 36, srb, TO_XFER_BUF);
  82         return USB_STOR_TRANSPORT_GOOD;
  83 }
  84
  85
  86 /* ----- SM_SCSI_Mode_Sense() ------------------------------------------ */
  87 int SM_SCSI_Mode_Sense(struct us_data *us, struct scsi_cmnd *srb)
  88 {
  89         BYTE    mediaNoWP[12] = {0x0b, 0x00, 0x00, 0x08, 0x00, 0x00,
  90                                 0x71, 0xc0, 0x00, 0x00, 0x02, 0x00};
  91         BYTE    mediaWP[12]   = {0x0b, 0x00, 0x80, 0x08, 0x00, 0x00,
  92                                 0x71, 0xc0, 0x00, 0x00, 0x02, 0x00};
  93
  94         if (us->SM_Status.WtP)
  95                 usb_stor_set_xfer_buf(us, mediaWP, 12, srb, TO_XFER_BUF);
  96         else
  97                 usb_stor_set_xfer_buf(us, mediaNoWP, 12, srb, TO_XFER_BUF);
  98
  99
 100         return USB_STOR_TRANSPORT_GOOD;
 101 }
 102
 103 /* ----- SM_SCSI_Read_Capacity() --------------------------------------- */
 104 int SM_SCSI_Read_Capacity(struct us_data *us, struct scsi_cmnd *srb)
 105 {
 106         unsigned int offset = 0;
 107         struct scatterlist *sg = NULL;
 108         DWORD   bl_num;
 109         WORD    bl_len;
 110         BYTE    buf[8];
 111
 112         dev_dbg(&us->pusb_dev->dev, "SM_SCSI_Read_Capacity\n");
 113
 114         bl_len = 0x200;
 115         bl_num = Ssfdc.MaxLogBlocks * Ssfdc.MaxSectors * Ssfdc.MaxZones - 1;
 116
 117         us->bl_num = bl_num;
 118         dev_dbg(&us->pusb_dev->dev, "bl_len = %x\n", bl_len);
 119         dev_dbg(&us->pusb_dev->dev, "bl_num = %x\n", bl_num);
 120
 121         buf[0] = (bl_num >> 24) & 0xff;
 122         buf[1] = (bl_num >> 16) & 0xff;
 123         buf[2] = (bl_num >> 8) & 0xff;
 124         buf[3] = (bl_num >> 0) & 0xff;
 125         buf[4] = (bl_len >> 24) & 0xff;
 126         buf[5] = (bl_len >> 16) & 0xff;
 127         buf[6] = (bl_len >> 8) & 0xff;
 128         buf[7] = (bl_len >> 0) & 0xff;
 129
 130         usb_stor_access_xfer_buf(us, buf, 8, srb, &sg, &offset, TO_XFER_BUF);
 131
 132         return USB_STOR_TRANSPORT_GOOD;
 133 }
 134
 135 /* ----- SM_SCSI_Read() -------------------------------------------------- */
 136 int SM_SCSI_Read(struct us_data *us, struct scsi_cmnd *srb)
 137 {
 138         int result = 0;
 139         PBYTE   Cdb = srb->cmnd;
 140         DWORD bn  =  ((Cdb[2] << 24) & 0xff000000) |
 141                         ((Cdb[3] << 16) & 0x00ff0000) |
 142                         ((Cdb[4] << 8) & 0x0000ff00) |
 143                         ((Cdb[5] << 0) & 0x000000ff);
 144         WORD  blen = ((Cdb[7] << 8) & 0xff00)     | ((Cdb[8] << 0) & 0x00ff);
 145         DWORD   blenByte = blen * 0x200;
 146         void    *buf;
 147
 148
 149         if (bn > us->bl_num)
 150                 return USB_STOR_TRANSPORT_ERROR;
 151
 152         buf = kmalloc(blenByte, GFP_KERNEL);
 153         if (buf == NULL)
 154                 return USB_STOR_TRANSPORT_ERROR;
 155         result = Media_D_ReadSector(us, bn, blen, buf);
 156         usb_stor_set_xfer_buf(us, buf, blenByte, srb, TO_XFER_BUF);
 157         kfree(buf);
 158
 159         if (!result)
 160                 return USB_STOR_TRANSPORT_GOOD;
 161         else
 162                 return USB_STOR_TRANSPORT_ERROR;
 163
 164         return USB_STOR_TRANSPORT_GOOD;
 165 }
 166
 167 /* ----- SM_SCSI_Write() -------------------------------------------------- */
 168 int SM_SCSI_Write(struct us_data *us, struct scsi_cmnd *srb)
 169 {
 170         int result = 0;
 171         PBYTE   Cdb = srb->cmnd;
 172         DWORD bn  =  ((Cdb[2] << 24) & 0xff000000) |
 173                         ((Cdb[3] << 16) & 0x00ff0000) |
 174                         ((Cdb[4] << 8) & 0x0000ff00) |
 175                         ((Cdb[5] << 0) & 0x000000ff);
 176         WORD  blen = ((Cdb[7] << 8) & 0xff00)     | ((Cdb[8] << 0) & 0x00ff);
 177         DWORD   blenByte = blen * 0x200;
 178         void    *buf;
 179
 180
 181         if (bn > us->bl_num)
 182                 return USB_STOR_TRANSPORT_ERROR;
 183
 184         buf = kmalloc(blenByte, GFP_KERNEL);
 185         if (buf == NULL)
 186                 return USB_STOR_TRANSPORT_ERROR;
 187         usb_stor_set_xfer_buf(us, buf, blenByte, srb, FROM_XFER_BUF);
 188         result = Media_D_CopySector(us, bn, blen, buf);
 189         kfree(buf);
 190
 191         if (!result)
 192                 return USB_STOR_TRANSPORT_GOOD;
 193         else
 194                 return USB_STOR_TRANSPORT_ERROR;
 195
 196         return USB_STOR_TRANSPORT_GOOD;
 197 }
 198