| Message ID | 20110725122130.GA5297@davesworkthinkpad |
|---|---|
| State | New |
| Headers | show |
On 07/25/2011 07:21 AM, Dr. David Alan Gilbert wrote: > When writing the last sector of an SD card using WRITE_MULTIPLE_BLOCK > QEmu throws an error saying that we've run off the end, and leaves > itself in the wrong state. > > Tested on ARM Vexpress model. > > Signed-off-by: Dr. David Alan Gilbert<david.gilbert@linaro.org> Applied. Thanks. Regards, Anthony Liguori > > --- > Don't throw address error on last block, and leave in correct state. > > diff --git a/hw/sd.c b/hw/sd.c > index cedfb20..219a0dd 100644 > --- a/hw/sd.c > +++ b/hw/sd.c > @@ -1450,14 +1450,8 @@ void sd_write_data(SDState *sd, uint8_t value) > break; > > case 25: /* CMD25: WRITE_MULTIPLE_BLOCK */ > - sd->data[sd->data_offset ++] = value; > - if (sd->data_offset>= sd->blk_len) { > - /* TODO: Check CRC before committing */ > - sd->state = sd_programming_state; > - BLK_WRITE_BLOCK(sd->data_start, sd->data_offset); > - sd->blk_written ++; > - sd->data_start += sd->blk_len; > - sd->data_offset = 0; > + if (sd->data_offset == 0) { > + /* Start of the block - lets check the address is valid */ > if (sd->data_start + sd->blk_len> sd->size) { > sd->card_status |= ADDRESS_ERROR; > break; > @@ -1466,6 +1460,15 @@ void sd_write_data(SDState *sd, uint8_t value) > sd->card_status |= WP_VIOLATION; > break; > } > + } > + sd->data[sd->data_offset++] = value; > + if (sd->data_offset>= sd->blk_len) { > + /* TODO: Check CRC before committing */ > + sd->state = sd_programming_state; > + BLK_WRITE_BLOCK(sd->data_start, sd->data_offset); > + sd->blk_written++; > + sd->data_start += sd->blk_len; > + sd->data_offset = 0; > sd->csd[14] |= 0x40; > > /* Bzzzzzzztt .... Operation complete. */ > >
diff --git a/hw/sd.c b/hw/sd.c index cedfb20..219a0dd 100644 --- a/hw/sd.c +++ b/hw/sd.c @@ -1450,14 +1450,8 @@ void sd_write_data(SDState *sd, uint8_t value) break; case 25: /* CMD25: WRITE_MULTIPLE_BLOCK */ - sd->data[sd->data_offset ++] = value; - if (sd->data_offset >= sd->blk_len) { - /* TODO: Check CRC before committing */ - sd->state = sd_programming_state; - BLK_WRITE_BLOCK(sd->data_start, sd->data_offset); - sd->blk_written ++; - sd->data_start += sd->blk_len; - sd->data_offset = 0; + if (sd->data_offset == 0) { + /* Start of the block - lets check the address is valid */ if (sd->data_start + sd->blk_len > sd->size) { sd->card_status |= ADDRESS_ERROR; break; @@ -1466,6 +1460,15 @@ void sd_write_data(SDState *sd, uint8_t value) sd->card_status |= WP_VIOLATION; break; } + } + sd->data[sd->data_offset++] = value; + if (sd->data_offset >= sd->blk_len) { + /* TODO: Check CRC before committing */ + sd->state = sd_programming_state; + BLK_WRITE_BLOCK(sd->data_start, sd->data_offset); + sd->blk_written++; + sd->data_start += sd->blk_len; + sd->data_offset = 0; sd->csd[14] |= 0x40; /* Bzzzzzzztt .... Operation complete. */
When writing the last sector of an SD card using WRITE_MULTIPLE_BLOCK QEmu throws an error saying that we've run off the end, and leaves itself in the wrong state. Tested on ARM Vexpress model. Signed-off-by: Dr. David Alan Gilbert <david.gilbert@linaro.org> --- Don't throw address error on last block, and leave in correct state.