diff options
Diffstat (limited to 'drivers/usb/storage/realtek_cr.c')
| -rw-r--r-- | drivers/usb/storage/realtek_cr.c | 117 |
1 files changed, 107 insertions, 10 deletions
diff --git a/drivers/usb/storage/realtek_cr.c b/drivers/usb/storage/realtek_cr.c index 34adc4b42ceb..0ce5f79197e7 100644 --- a/drivers/usb/storage/realtek_cr.c +++ b/drivers/usb/storage/realtek_cr.c @@ -25,7 +25,6 @@ #include <linux/kthread.h> #include <linux/sched.h> #include <linux/kernel.h> -#include <linux/version.h> #include <scsi/scsi.h> #include <scsi/scsi_cmnd.h> @@ -293,6 +292,52 @@ static int rts51x_bulk_transport(struct us_data *us, u8 lun, return USB_STOR_TRANSPORT_ERROR; } +static int rts51x_bulk_transport_special(struct us_data *us, u8 lun, + u8 *cmd, int cmd_len, u8 *buf, int buf_len, + enum dma_data_direction dir, int *act_len) +{ + struct bulk_cb_wrap *bcb = (struct bulk_cb_wrap *) us->iobuf; + struct bulk_cs_wrap *bcs = (struct bulk_cs_wrap *) us->iobuf; + int result; + unsigned int cswlen; + unsigned int cbwlen = US_BULK_CB_WRAP_LEN; + + /* set up the command wrapper */ + bcb->Signature = cpu_to_le32(US_BULK_CB_SIGN); + bcb->DataTransferLength = cpu_to_le32(buf_len); + bcb->Flags = (dir == DMA_FROM_DEVICE) ? 1 << 7 : 0; + bcb->Tag = ++us->tag; + bcb->Lun = lun; + bcb->Length = cmd_len; + + /* copy the command payload */ + memset(bcb->CDB, 0, sizeof(bcb->CDB)); + memcpy(bcb->CDB, cmd, bcb->Length); + + /* send it to out endpoint */ + result = usb_stor_bulk_transfer_buf(us, us->send_bulk_pipe, + bcb, cbwlen, NULL); + if (result != USB_STOR_XFER_GOOD) + return USB_STOR_TRANSPORT_ERROR; + + /* DATA STAGE */ + /* send/receive data payload, if there is any */ + + if (buf && buf_len) { + unsigned int pipe = (dir == DMA_FROM_DEVICE) ? + us->recv_bulk_pipe : us->send_bulk_pipe; + result = usb_stor_bulk_transfer_buf(us, pipe, + buf, buf_len, NULL); + if (result == USB_STOR_XFER_ERROR) + return USB_STOR_TRANSPORT_ERROR; + } + + /* get CSW for device status */ + result = usb_bulk_msg(us->pusb_dev, us->recv_bulk_pipe, bcs, + US_BULK_CS_WRAP_LEN, &cswlen, 250); + return result; +} + /* Determine what the maximum LUN supported is */ static int rts51x_get_max_lun(struct us_data *us) { @@ -320,6 +365,11 @@ static int rts51x_read_mem(struct us_data *us, u16 addr, u8 *data, u16 len) { int retval; u8 cmnd[12] = { 0 }; + u8 *buf; + + buf = kmalloc(len, GFP_NOIO); + if (buf == NULL) + return USB_STOR_TRANSPORT_ERROR; US_DEBUGP("%s, addr = 0x%x, len = %d\n", __func__, addr, len); @@ -331,10 +381,14 @@ static int rts51x_read_mem(struct us_data *us, u16 addr, u8 *data, u16 len) cmnd[5] = (u8) len; retval = rts51x_bulk_transport(us, 0, cmnd, 12, - data, len, DMA_FROM_DEVICE, NULL); - if (retval != USB_STOR_TRANSPORT_GOOD) + buf, len, DMA_FROM_DEVICE, NULL); + if (retval != USB_STOR_TRANSPORT_GOOD) { + kfree(buf); return -EIO; + } + memcpy(data, buf, len); + kfree(buf); return 0; } @@ -342,6 +396,12 @@ static int rts51x_write_mem(struct us_data *us, u16 addr, u8 *data, u16 len) { int retval; u8 cmnd[12] = { 0 }; + u8 *buf; + + buf = kmalloc(len, GFP_NOIO); + if (buf == NULL) + return USB_STOR_TRANSPORT_ERROR; + memcpy(buf, data, len); US_DEBUGP("%s, addr = 0x%x, len = %d\n", __func__, addr, len); @@ -353,7 +413,8 @@ static int rts51x_write_mem(struct us_data *us, u16 addr, u8 *data, u16 len) cmnd[5] = (u8) len; retval = rts51x_bulk_transport(us, 0, cmnd, 12, - data, len, DMA_TO_DEVICE, NULL); + buf, len, DMA_TO_DEVICE, NULL); + kfree(buf); if (retval != USB_STOR_TRANSPORT_GOOD) return -EIO; @@ -365,6 +426,11 @@ static int rts51x_read_status(struct us_data *us, { int retval; u8 cmnd[12] = { 0 }; + u8 *buf; + + buf = kmalloc(len, GFP_NOIO); + if (buf == NULL) + return USB_STOR_TRANSPORT_ERROR; US_DEBUGP("%s, lun = %d\n", __func__, lun); @@ -372,10 +438,14 @@ static int rts51x_read_status(struct us_data *us, cmnd[1] = 0x09; retval = rts51x_bulk_transport(us, lun, cmnd, 12, - status, len, DMA_FROM_DEVICE, actlen); - if (retval != USB_STOR_TRANSPORT_GOOD) + buf, len, DMA_FROM_DEVICE, actlen); + if (retval != USB_STOR_TRANSPORT_GOOD) { + kfree(buf); return -EIO; + } + memcpy(status, buf, len); + kfree(buf); return 0; } @@ -434,6 +504,29 @@ static int enable_oscillator(struct us_data *us) return 0; } +static int __do_config_autodelink(struct us_data *us, u8 *data, u16 len) +{ + int retval; + u16 addr = 0xFE47; + u8 cmnd[12] = {0}; + + US_DEBUGP("%s, addr = 0x%x, len = %d\n", __FUNCTION__, addr, len); + + cmnd[0] = 0xF0; + cmnd[1] = 0x0E; + cmnd[2] = (u8)(addr >> 8); + cmnd[3] = (u8)addr; + cmnd[4] = (u8)(len >> 8); + cmnd[5] = (u8)len; + + retval = rts51x_bulk_transport_special(us, 0, cmnd, 12, data, len, DMA_TO_DEVICE, NULL); + if (retval != USB_STOR_TRANSPORT_GOOD) { + return -EIO; + } + + return 0; +} + static int do_config_autodelink(struct us_data *us, int enable, int force) { int retval; @@ -454,7 +547,8 @@ static int do_config_autodelink(struct us_data *us, int enable, int force) US_DEBUGP("In %s,set 0xfe47 to 0x%x\n", __func__, value); - retval = rts51x_write_mem(us, 0xFE47, &value, 1); + /* retval = rts51x_write_mem(us, 0xFE47, &value, 1); */ + retval = __do_config_autodelink(us, &value, 1); if (retval < 0) return -EIO; @@ -486,7 +580,8 @@ static int config_autodelink_after_power_on(struct us_data *us) SET_BIT(value, 7); - retval = rts51x_write_mem(us, 0xFE47, &value, 1); + /* retval = rts51x_write_mem(us, 0xFE47, &value, 1); */ + retval = __do_config_autodelink(us, &value, 1); if (retval < 0) return -EIO; @@ -507,7 +602,8 @@ static int config_autodelink_after_power_on(struct us_data *us) CLR_BIT(value, 7); } - retval = rts51x_write_mem(us, 0xFE47, &value, 1); + /* retval = rts51x_write_mem(us, 0xFE47, &value, 1); */ + retval = __do_config_autodelink(us, &value, 1); if (retval < 0) return -EIO; @@ -584,7 +680,8 @@ static int config_autodelink_before_power_down(struct us_data *us) if (CHECK_ID(chip, 0x0138, 0x3882)) SET_BIT(value, 2); - retval = rts51x_write_mem(us, 0xFE47, &value, 1); + /* retval = rts51x_write_mem(us, 0xFE47, &value, 1); */ + retval = __do_config_autodelink(us, &value, 1); if (retval < 0) return -EIO; } |