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scsihd: Implement REQ_SENSE. 

Returns error information stored in class fields: sense, asc, ascq, sksv, and field.
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joevt 2024-03-10 04:44:35 -07:00 committed by dingusdev
parent 44564065f6
commit 338bbe27a8
1 changed files with 52 additions and 4 deletions
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56
devices/common/scsi/scsihd.cpp
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@ -202,11 +202,59 @@ int ScsiHardDisk::test_unit_ready() {
}
int ScsiHardDisk::req_sense(uint16_t alloc_len) {
if (alloc_len != 252) {
LOG_F(WARNING, "%s: inappropriate Allocation Length: %d", this->name.c_str(),
alloc_len);
//if (!check_lun())
// return;
int next_phase;
int lun;
if (this->last_selection_has_atention) {
lun = this->last_selection_message & 7;
}
return ScsiError::NO_ERROR; // placeholder - no sense
else {
lun = cmd_buf[1] >> 5;
}
if (lun == this->lun) {
this->status = ScsiStatus::GOOD;
this->data_buf[ 2] = this->sense; // Reserved:0xf0, Sense Key:0x0f ; e.g. ScsiSense::ILLEGAL_REQ
this->data_buf[12] = this->asc; // addition sense code
this->data_buf[13] = this->ascq; // additional sense qualifier
this->data_buf[15] = this->sksv; // SKSV:0x80, C/D:0x40, Reserved:0x30, BPV:8, Bit Pointer:7
this->data_buf[16] = this->field >> 8; // field pointer
this->data_buf[17] = this->field;
}
else {
this->data_buf[ 2] = this->sense; // Reserved:0xf0, Sense Key:0x0f ; e.g. ScsiSense::ILLEGAL_REQ
this->data_buf[12] = 0x25; // addition sense code = Logical Unit Not Supported
this->data_buf[13] = 0; // additional sense qualifier
this->data_buf[15] = 0; // SKSV:0x80, C/D:0x40, Reserved:0x30, BPV:8, Bit Pointer:7
this->data_buf[16] = 0; // field pointer
this->data_buf[17] = 0;
}
{
// FIXME: there should be a way to set the VALID and ILI bits.
this->data_buf[ 0] = 0x70; // Valid:0x80, Error Code:0x7f
this->data_buf[ 1] = 0; // segment number
this->data_buf[ 3] = 0; // information
this->data_buf[ 4] = 0;
this->data_buf[ 5] = 0;
this->data_buf[ 6] = 0;
this->data_buf[ 7] = 10; // additional sense length
this->data_buf[ 8] = 0; // command specific information
this->data_buf[ 9] = 0;
this->data_buf[10] = 0;
this->data_buf[11] = 0;
this->data_buf[14] = 0; // field replaceable unit code
this->data_buf[18] = 0; // reserved
this->data_buf[19] = 0; // reserved
}
this->bytes_out = alloc_len; // Open Firmware 1.0.5 asks for 18 bytes.
this->switch_phase(ScsiPhase::DATA_IN);
return ScsiError::NO_ERROR;
}
void ScsiHardDisk::inquiry() {