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, 0x55, 0x53, 0x42, 0x32, 0x2E, 0x30, 0x20, 0x20, 0x43, 0x61, 0x72, 0x64, 0x52, 0x65, 0x61, 0x64, 0x65, 0x72, 0x20, 0x20, 0x20, 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 int SM_SCSI_Mode_Sense(struct us_data *us, struct scsi_cmnd *srb)
  84 {
  85         BYTE    mediaNoWP[12] = {0x0b, 0x00, 0x00, 0x08, 0x00, 0x00, 0x71, 0xc0, 0x00, 0x00, 0x02, 0x00};
  86         BYTE    mediaWP[12]   = {0x0b, 0x00, 0x80, 0x08, 0x00, 0x00, 0x71, 0xc0, 0x00, 0x00, 0x02, 0x00};
  87
  88         if (us->SM_Status.WtP)
  89                 usb_stor_set_xfer_buf(us, mediaWP, 12, srb, TO_XFER_BUF);
  90         else
  91                 usb_stor_set_xfer_buf(us, mediaNoWP, 12, srb, TO_XFER_BUF);
  92
  93
  94         return USB_STOR_TRANSPORT_GOOD;
  95 }
  96
  97 /* ----- SM_SCSI_Read_Capacity() -------------------------------------------------- */
  98 int SM_SCSI_Read_Capacity(struct us_data *us, struct scsi_cmnd *srb)
  99 {
 100         unsigned int offset = 0;
 101         struct scatterlist *sg = NULL;
 102         DWORD   bl_num;
 103         WORD    bl_len;
 104         BYTE    buf[8];
 105
 106         printk("SM_SCSI_Read_Capacity\n");
 107
 108         bl_len = 0x200;
 109         bl_num = Ssfdc.MaxLogBlocks * Ssfdc.MaxSectors * Ssfdc.MaxZones - 1;
 110
 111         us->bl_num = bl_num;
 112         printk("bl_len = %x\n", bl_len);
 113         printk("bl_num = %x\n", bl_num);
 114
 115         buf[0] = (bl_num >> 24) & 0xff;
 116         buf[1] = (bl_num >> 16) & 0xff;
 117         buf[2] = (bl_num >> 8) & 0xff;
 118         buf[3] = (bl_num >> 0) & 0xff;
 119         buf[4] = (bl_len >> 24) & 0xff;
 120         buf[5] = (bl_len >> 16) & 0xff;
 121         buf[6] = (bl_len >> 8) & 0xff;
 122         buf[7] = (bl_len >> 0) & 0xff;
 123
 124         usb_stor_access_xfer_buf(us, buf, 8, srb, &sg, &offset, TO_XFER_BUF);
 125
 126         return USB_STOR_TRANSPORT_GOOD;
 127 }
 128
 129 /* ----- SM_SCSI_Read() -------------------------------------------------- */
 130 int SM_SCSI_Read(struct us_data *us, struct scsi_cmnd *srb)
 131 {
 132         int result = 0;
 133         PBYTE   Cdb = srb->cmnd;
 134         DWORD bn  =  ((Cdb[2] << 24) & 0xff000000) | ((Cdb[3] << 16) & 0x00ff0000) |
 135                 ((Cdb[4] << 8) & 0x0000ff00) | ((Cdb[5] << 0) & 0x000000ff);
 136         WORD  blen = ((Cdb[7] << 8) & 0xff00)     | ((Cdb[8] << 0) & 0x00ff);
 137         DWORD   blenByte = blen * 0x200;
 138         void    *buf;
 139
 140
 141         if (bn > us->bl_num)
 142                 return USB_STOR_TRANSPORT_ERROR;
 143
 144         buf = kmalloc(blenByte, GFP_KERNEL);
 145         if (buf == NULL)
 146                 return USB_STOR_TRANSPORT_ERROR;
 147         result = Media_D_ReadSector(us, bn, blen, buf);
 148         usb_stor_set_xfer_buf(us, buf, blenByte, srb, TO_XFER_BUF);
 149         kfree(buf);
 150
 151         if (!result)
 152                 return USB_STOR_TRANSPORT_GOOD;
 153         else
 154                 return USB_STOR_TRANSPORT_ERROR;
 155
 156         return USB_STOR_TRANSPORT_GOOD;
 157 }
 158
 159 /* ----- SM_SCSI_Write() -------------------------------------------------- */
 160 int SM_SCSI_Write(struct us_data *us, struct scsi_cmnd *srb)
 161 {
 162         int result = 0;
 163         PBYTE   Cdb = srb->cmnd;
 164         DWORD bn  =  ((Cdb[2] << 24) & 0xff000000) | ((Cdb[3] << 16) & 0x00ff0000) |
 165                 ((Cdb[4] << 8) & 0x0000ff00) | ((Cdb[5] << 0) & 0x000000ff);
 166         WORD  blen = ((Cdb[7] << 8) & 0xff00)     | ((Cdb[8] << 0) & 0x00ff);
 167         DWORD   blenByte = blen * 0x200;
 168         void    *buf;
 169
 170
 171         if (bn > us->bl_num)
 172                 return USB_STOR_TRANSPORT_ERROR;
 173
 174         buf = kmalloc(blenByte, GFP_KERNEL);
 175         if (buf == NULL)
 176                 return USB_STOR_TRANSPORT_ERROR;
 177         usb_stor_set_xfer_buf(us, buf, blenByte, srb, FROM_XFER_BUF);
 178         result = Media_D_CopySector(us, bn, blen, buf);
 179         kfree(buf);
 180
 181         if (!result)
 182                 return USB_STOR_TRANSPORT_GOOD;
 183         else
 184                 return USB_STOR_TRANSPORT_ERROR;
 185
 186         return USB_STOR_TRANSPORT_GOOD;
 187 }
 188